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The Big Misconception About Electricity

  • Жарияланды 2021 ж. 18 Қар.

Пікірлер • 76 406

  • ElectroBOOM
    ElectroBOOM  Жыл бұрын +33207

    Well well well, stepping into my territory, eh?! I shall make a video about this!!

    • Cuba Libre
      Cuba Libre 9 күн бұрын

      I'd like a detailed explanation of how a collapsing magnetic field in transformer primary winding induces a NEW field of increased voltage but reduced amps in secondary windings when primary windings are much heavier and smaller in number than secondary. ie. Power plant X-formers. (Or old stator/coil spark system on a 1974 Honda XR75 dirt bike...to increase voltage into the 40K+ volts needed to jump spark plug gap)

    • lofatmat
      lofatmat Ай бұрын

      Shock get wired into him mate!

    • Mihail Milev
      Mihail Milev Ай бұрын


    • hawklord100
      hawklord100 Ай бұрын

      This explains the Electric Universe theory

    • Nessuno Dorme
      Nessuno Dorme Ай бұрын

      I hope you do. This was needlessly complicated, spends a lot of time laughing at people's alleged misconceptions. It takes off in confusing tangents and ends up confusing, even misleading, not answering the question alluded to in the title.

  • admanvothing
    admanvothing Ай бұрын +308

    I just want you to know that through several physics classes and after a decade of angrily not understanding how electrons flowing in a circle actually transmits energy, you have finally answered my question. Hallelujah, thank you for taking the time to actually explain the how instead of simply telling me to memorize equations

    • Super.Chuck
      Super.Chuck 13 күн бұрын

      @goudsnaar speler At least you tried. You get points for trying.
      Wish all teachers could explain stuff as well as Neil deGrasse Tyson.

    • goudsnaar speler
      goudsnaar speler 13 күн бұрын +1

      @Super.Chuck Yeah good point. I didn't mean "completely blew my mind" in the sense that I felt lied to, but more that I never thought about it that way.
      But yeah, I also tutor some highschoolers. Sometimes it's very hard to level down my explanation so that they can understand. One-to-one is fine though, since I am recieving constant feedback, either passively or actively. But in front of a whole class... I failed miserably in making them understand stuff XD

    • Super.Chuck
      Super.Chuck 13 күн бұрын +1

      @goudsnaar speler Keep in mind that explaining stuff in school to 5th graders ... the stuff has to be literally dumbed down for learning. Extra complications and/or side bar effects .... are not possible for young ones to understand.
      The information can be 'denser' and more complete as you grow.
      SO, Now, and that's a capitalized NOW, remember the power lines don't go BACK to the powerstation, it's shunted into the actual "earth/ground" at the power sub stations.
      Everything you learn, is also partially incorrect. Yet we are still able to learn something useful.

    • Mark Moser
      Mark Moser 18 күн бұрын

      Youre right, id say it would have to do with alot of what is “known” about electrity is theory. We can get consistency with almost everything but every now and then something breaks the rules so to speak. It wasnt too long ago that the definition of an ampere was redefined

  • Trevon Scott
    Trevon Scott 28 күн бұрын +178

    This video should be mandatory curriculum for people trying to obtain Magnetic Particle Testing certificates. This explanation would have made the class so much easier.

    • L R
      L R 10 күн бұрын +1

      I must add that Magnetic Particle Testing certificates should be a prerequisite to get employment at janitorial jobs.

    • Trevon Scott
      Trevon Scott 12 күн бұрын +1

      @Jon Taylor the explanation of the right hand rule and flow of current, where the field lies is specifically as well as rectification or the capabilities of DC vs AC is what I was referencing. And the theory of electricity helped my understand the why. I’m a very curious person and knowing the how or why helps me out. Maybe not in the field, but certainly for the written testing I took.
      I understand that this may have not helped everyone, but I had to get my certification online when I inspected Railcars in a repair facility. It was brutal because there was no way to ask questions. The test was literally a regurgitation of information. All memory. I feel like I would have had an easier time because if I didn’t remember the answer, I could have at least understood the theory enough to make a logical assumption.
      We only ever used Rectified AC with dry particles. Never told why…that was just a standard for our industry/company. Now I’ve got a better idea as to the why
      Edit: added more

    • Andrew Ong
      Andrew Ong 15 күн бұрын +1

      Actually it's more of Conductivity Testing which is what this says all about.

    • Jon Taylor
      Jon Taylor 22 күн бұрын +3

      When I got mine in the 80's there was NO mention of anything remotely like this. And I did MagPart/NDI on Acft assemblies for years.

  • Thomas Külpmann
    Thomas Külpmann 15 күн бұрын +29

    I studied electronics. I learned about Maxwell and Poynting... And I passed the exam. But I never before brought this (and it has not even been mentioned in all the lessons) into a context with the flow of electricity, specifically with DC.
    However, having heard about the basic formulas and theorys it became clear very fast ("flash") :-) Thanks for this explanation here...😄

    • Leonard Tam
      Leonard Tam 11 күн бұрын

      He basically theoretical physcizied our asses. Did a thought experiment and made a prediction

  • B F
    B F Ай бұрын +98

    This is really cool. I always thought of it as water because that's what helped me pass a circuts class in college, but I've always been curious about magnetic fields and stuff, so this answer is cooler and therefore better.

    • Stefan Molnapor
      Stefan Molnapor Ай бұрын +1

      Same here

    • Rick MacDonald
      Rick MacDonald Ай бұрын +9

      Magnets; how do they work? I love that question is treated as idiotic but it’s actually a profoundly good and important and in fact difficult question lol.

    • MrMustangMan
      MrMustangMan Ай бұрын +2


  • Sean Colgan
    Sean Colgan Ай бұрын +25

    So in theory, if we could use a box or device to block the magnetic and electrical fields the load wouldn’t work, in this case light wouldn’t turn on? Could we get a follow up video showing that? Also would be interesting to use iron fillings to show your theory in a working circuit.
    I’m an electrician and was never taught this thought process! This is why I love this field, always learning. Great video, keep up the great work.

    • henry james
      henry james 3 күн бұрын +1

      @daviga1 "Never try to teach a pig to sing, it only frustrates you, and annoys the pig"(Isaac Asimov)

    • daviga1
      daviga1 22 күн бұрын +9

      Great experimental thinking here. I believe you'll find that they are inseperable however. This video is somewhat misinformative. In transmitting energy, wires do indeed guide the transmission of power (that's why we use them) what they don't do is (fully) CONFINE it.

    • blutey
      blutey 23 күн бұрын +1

      Yes, would be interesting to put up some sort of physical barrier at 90 degrees to the wire and see what happens...

    • Mark Lombard
      Mark Lombard Ай бұрын +1

      @marathonman so does this have something to do with Eather Theory cause it does remind me of it.

    • marathonman
      marathonman Ай бұрын +4

      The iron fillings distort the actual fields because they to give off a magnetic field themselves so the representation would not be correct. Yes of the fields were some how blocked zero would happen. Here's the thing though, the Eather permeates everything because it is 1,000 times smaller then the smallest atom.

  • Haven DeZeeuw
    Haven DeZeeuw  Жыл бұрын +29233

    I’m so glad this video exists. I use to completely not even understand how electricity worked, and now I still don’t.

    • diannef315
      diannef315 4 ай бұрын

      It is amazing how human beings were able to figure out how to use Quantum Fields to generate electricity with wires and send radio and tv signals through what seemed like just air.

    • Flurgy22
      Flurgy22 6 ай бұрын

      I used to believe i understood how electricity worked, now I don't , how can I find the blue pill and take it?

    • Royston Boodoo
      Royston Boodoo 6 ай бұрын


    • Dallas Szafwinski
      Dallas Szafwinski 6 ай бұрын

      Great comment

    • Mustafizur Rahman
      Mustafizur Rahman 6 ай бұрын


  • GhibliOmatiC
    GhibliOmatiC 11 күн бұрын +6

    I thought I understood how current flowed in a circuit... I've been lied to in school. The actual mechanism is absolutely fascinating.

  • Sam
    Sam Ай бұрын +5

    Thanking you, team and contributors for sharing such revolutionary ideas! I have been a long time follower of this channel.
    Also, a BIG thank you also for creating content in other languages so that this valuable knowledge can transcend spoken languages.

  • Blue Tube
    Blue Tube 20 күн бұрын +5

    Interesting, but the wires would already have fields propagated through them, because one end is connected to the battery (i.e. capacitance). What happens if you adjust the experiment, and use two switches, on each pole of the battery, closed simultaneously? Does it change anything?

  • Clinton Shiells
    Clinton Shiells Ай бұрын +3

    Thank you very much for this video. I just finished studying Maxwell’s equations and circuits and this filled in some intuitive gaps.

  • Kristian Dior
    Kristian Dior 18 күн бұрын +4

    you are a genius for the way you teach us this. Thank you, I have learnt so much from this channel. Everyone who watches this please pay attention, this is very intelligent information.

  • Be Smart
    Be Smart  Жыл бұрын +14914

    I feel like a baby who just realized mom and dad don’t really disappear during peek-a-boo

    • HighTemplarTreant
      HighTemplarTreant 15 күн бұрын

      That moment you find out that we and all living beings are also electric and we too have an electric field which may subtly interact the electric fields of electric devices we are surrounded nowadays.

    • N R
      N R Ай бұрын

      Nope dude. They went upstairs to do a boogie woogie until u realise they'r not there

    • Noxious Ophidian
      Noxious Ophidian  Жыл бұрын

      Please refer to another video. This explanation is very misleading. There are many other youtube videos explaining this better.

  • EFT Rodenberger
    EFT Rodenberger Ай бұрын

    Wow, so well produced and edited!!! You are such a great writer and host! 😊

  • Fred Gilbert
    Fred Gilbert 10 күн бұрын +2

    Wow…this is going to take a while to get my head around. I’m not an electrician but I did take a practical electronics course in grade school. At that time they used the water comparison.

  • Tnpcook
    Tnpcook 17 күн бұрын +1

    It's exciting that you've managed to sensationalize this kind of knowledge!

  • Juan Rossi
    Juan Rossi Ай бұрын +1

    thanks a lot man. I used to hear about that, but I had never seen a proper explanation. your explanation is great, the animations are great, we can see that it took a lot of work and research, so congratulations!

  • booboo
    booboo 26 күн бұрын +15

    This is a great video, thanks for making it! What if the lamp were in a sealed room? Assuming only the conductors pass through the walls of the room into the lamp how would the energy get their to power the lamp? This is going to keep me awake at night!

      IVAN F. SANTOS 5 күн бұрын

      Great question, .... 😀great video..... unfortunately it is also my question. Please someone clarify....

  • MattMGK
    MattMGK  Жыл бұрын +3076

    After watching this video I can confidently say I understand less about how electricity works than I did before.

      DARTHNECRION 10 күн бұрын

      @Jordan Moravenov Yeah, like why do we even need wires if they’re not carrying the actual electric power? This whole video left me more confused after watching it than I was before. 😬

    • Volty De Qua
      Volty De Qua Ай бұрын +1

      @Ryan Taylor «@Alan Beasy He didn't explain his transformer idea very well imo. The magnetic field is what makes the electricity flow in the second coil, so it's not really a good "gap" analogy imo.»
      He didn't explain anything. It is just cheap demagogy packed with hyped title and posing as the Master Of The Around Energy. Here pseudo-nonsense pays in terms of views / followers.

    • Volty De Qua
      Volty De Qua Ай бұрын

      @Buddha Bonobo «that's called the Dunning Kruger effect!»
      That doesn't exist. Was dismantled, as artefact, by the (same) accademia long time ago (soon after being published). So it's only useful to the parrots - to pretend they are superior because there are ignorants that pretend to know more than they know. And it would be empty talk even if it was valid.

    • marathonman
      marathonman Ай бұрын

      And the fact that electricity flows from negative to positive is even worse.

    • Prime Stoke
      Prime Stoke 2 ай бұрын

      @Alan Wannemaker this is a terrible reply. He doesn't understand electricity and you don't understand teaching skills. If you want to learn how to be teach properly, try opening your mind sometime.

  • Don lamour Chimhanda
    Don lamour Chimhanda Ай бұрын +7

    Wonderful video. I did the poynting vector and maxwell equations last semester but I never thought of them in that sense

    • Serg Che
      Serg Che 6 күн бұрын

      because you souldn't

    • Hugh Leyton
      Hugh Leyton Ай бұрын +5

      The Maxwell and Faraday do indicate rotating Magnetic fields in a DC cable, but the Energy is not passed in the fields, but current inside the wire... . Just imagine those many wires in a car wiring harness and all the fields outside the wires. . That just would not work. The energy has to be inside the wires.. . . I have 70 years of experience on this.

  • Ndpndntz
    Ndpndntz Ай бұрын +6

    I agree. Always thought it was weird to think that the electrons are flowing. They’re not. They are more so, “motivating”.

  • Samyak Mittal
    Samyak Mittal Ай бұрын +8

    I am a grade 12 science student and I found this video really interesting.

  • Edwin Bradford
    Edwin Bradford Ай бұрын +5

    Phenomenal explanation, one of the best I've ever seen and made me exclaim out aloud more than once.

    • At the Symposium
      At the Symposium 15 күн бұрын +1

      @Exotic Spy Travel Ya, I believe the purpose of the video was to acknowledge the role and property of electromagnetism, but he never seems to realize where his emphasis falls apart. Namely, if it was just the fields around the wire, why would the wires need to be connected to the device. We could just lay electrical lines in proximity to things that we wanted to work for that matter. Also, it is very common for humans to simplify explanations in heed of making the understanding of said concept more intuitive. Yes, the analogy often used for electricity that it flows like water bugs me a bit too but it helps for practical understanding.

    • Exotic Spy Travel
      Exotic Spy Travel 25 күн бұрын +1

      Too bad it's a stupid explanation. Just think a bit: if the electrical energy is passing only around the wire, how it can ever reach the bulb filament and make it shine? The bulk filament is also a wire and according to this stupid clip, the electrical energy should not touch it.

  • Joseph Spear
    Joseph Spear 13 күн бұрын

    Subscribed. You're a gifted orator. Great stuff.

  • Brock Jensen
    Brock Jensen 5 ай бұрын +1698

    Of course I find this video now… around 6 months ago I got into a small debate with my electrical engineering professor over a topic very similar to this. Everyone in the class seemed to be on the professors side which I guess makes sense but then the following week our professor walks into class and tells me he thought about what I was asking and had looked into it.
    He walked up to the board and showed some of the similar stuff you did in this video and proclaimed I had actually been correct and my original question that countered his previous discussion he admitted to the class he was in fact wrong. This was the first time in my life I had such a crystallized idea of what someone that was truly intelligent acted like. He wasn’t upset, frustrated or hurt that his initial statement was wrong because he didn’t care about being right, he cared about the truth.
    I know it sounds corny to say seeing someone look for confirmation instead of affirmation changed my outlook on life but it really did. Never before had I seen some so openly question their very own view and search for the truth rather than search for what backs up their view or idea. Great video, as always

    • HighTemplarTreant
      HighTemplarTreant 15 күн бұрын

      That moment you find out that we and all living beings are also electric and we too have an electric field which may subtly interact the electric fields of electric devices we are surrounded nowadays.

    • Reyquiem
      Reyquiem 26 күн бұрын

      The best part of being open to new possibilities like this is that, once you do the tests and the math, you get to be right no matter what. Either you were right beforehand, or you were wrong before but right now.

    • Volty De Qua
      Volty De Qua Ай бұрын

      @John Bayer «There are times when you are teaching and these topics come up, when it doesn't matter who is right.»
      Yes. What's more the teaching, to be useful to all, has to be tailored for the majority of the students - that those others (supposedly 95% that do not "understand fully") satisfy the system's requirements.
      So the answer should be "Ask, but do not expect me to waste time regardless of the validity of what you say, and do not expect me to shout the eventually found new truth if that truth is too complicated for the others. Pretending otherwise you finish as Brock Snobbish."

    • Volty De Qua
      Volty De Qua Ай бұрын

      What a nonsense to use such a nobble precedent to give credits to this crap! I had similar experiences in school, that cannot but come out of critical mind, but I preserved at least common sense (that rust comes with age if you don't exercise) that helps me to recognize nonsense packed as breakthrough knowledge. Entertainment, packed at one-way will, suitable for the depth of the masses' minds, compared to a an articulated arguing (two-way) with a professor. Does not add up! - Those able to argue / discuss despise this kind of superficial marketing videos.

  • Mark Does Stuff
    Mark Does Stuff Ай бұрын

    Well thanks for the video, you just think on something I work with every day. A field is established when the circuit is closed and there is an imbalance of charge at the source. For DC, the initial field upon switch closure is nil, then builds very rapidly, reaching a steady state for an unchanging load. For AC the field pulses from nil to full strength 120 times per second. Technically not an immediate flow but dependant upon the charge imbalance (voltage) at any given moment. That’s how I understand it at any rate

  • heavenz Kurs
    heavenz Kurs 17 күн бұрын +1

    finally some decent science information. More on Magnetic Resonance and Magnetic Fields please

  • Buddy Rehd
    Buddy Rehd 11 күн бұрын +1

    My mind is blown! Absolutely interesting. Makes me ponder what all this does to the human body and nature in the path…. Interesting

  • Jett Tall
    Jett Tall Ай бұрын +4

    Wow. Some of these ideas were poorly explained and would be difficult to understand for someone who hasn't been educated in electricity but fortunately, I have so that was not an issue for me. I commend you for discussing such ideas and bringing this idea to my attention. I have always thought about the way that electricity is something that is used so frequently and yet no one seems to care about knowing how it works. Even during high school physics, teachers would never have a problem with willfully ignoring the unanswered questions with regards to transferring electrical energy, forcing you to just ignore them yourself and power through, answering the problems according to a strict set of rules not knowing why those rules even work.
    I always suspected that there was something much more to electricity that most people did not understand properly. It is likely that this curiosity was partly responsible for my decision to study an electrical engineering degree, which, being in engineering, of course, has no problem with omitting technical details if they don't benefit you to get the thing to work. So, of course, during this degree, I experienced the same pressure to ignore the technical details and unanswered questions and was forced to avoid trying to truly understand why things work. This has been leaving me unsatisfied as I know that there must be more to it. Thank you for bringing this back to the forefront of my mind so that I can address this seeming lack of knowledge among humanity. I will investigate the physics myself and hopefully discover some more things about how electricity really works for the benefit of mankind.

    • Baywater Bridge Florida Premier Home Group
      Baywater Bridge Florida Premier Home Group 29 күн бұрын +1

      kinda the same. I was taught electron holes. That just looks stupid now but then again I don't fully understand the point this video was making because power does flow through the wires just grab one and see. 🙂 I'm not getting shocked anytime I just turn on a light switch so i think it's just a matter of conceptual terminology where I don't get his drift.

  • Arthur Zettel
    Arthur Zettel 23 күн бұрын +2

    It's really interesting. The yellow lines propagating from the battery to the light bulb are sort of like the Earth's magnetic field to the moon. I think this is really cool.

  • AT
    AT 11 ай бұрын +3236

    The fundamental law of physics: electricity disappear if you stop paying bills.

    • Yuri Desideri
      Yuri Desideri 15 күн бұрын

      @keith tomey As time goes, the energy cost to build it will be surpassed by it's own generation

    • keith tomey
      keith tomey 15 күн бұрын

      @Yuri Desideri Solar panels *use up* electricity - we get more energy if we *don't* build them (it's the poorest people on Earth who lose out as usual - all we have to do is stop "buying" solar panels & they'd have less of a problem - the least we could do surely). (Dot)

    • Unliuniverse
      Unliuniverse 16 күн бұрын


    • Rosemary
      Rosemary 18 күн бұрын

      @Maria Miccoli I am definitely solar powered. I love the warmth and brightness :)

  • Justin
    Justin Ай бұрын +3

    This is very fascinating. Do the same rules apply to the large and long cables that run underwater for connecting different countries via the internet? How is that done? How do these cables differ and can send data signals without interruption or distortion ?

    • marathonman
      marathonman Ай бұрын +1

      They don't differ, the same rules apply getting the right balances of electric to magnetic field ratio's. The reason they first failed were they were wrapped with massive iron wire which is highly magnetic throwing the balances off.

  • Phil A
    Phil A 14 күн бұрын

    Thank you. I love science and all things science. I have never understood this about electricity until this video. 😃

  • Mark Moser
    Mark Moser 18 күн бұрын +1

    You should have added in the demonstration to test the circuit with a meter after hitting the breaker, simple and easily taken for granted, but would be important for someone who doesnt do any electric work. Otherwise very informative

  • Matteo Sberna
    Matteo Sberna Ай бұрын

    Electric and magnetic fields are interchangeable, it just depends how you calculate them. You can see just one, the other or both, and it's the same effect. They are called not by chance "electromagnetic fields"
    also yes, I said 1/c because it was sexier that the other options

  • Lee Wilkinson
    Lee Wilkinson Ай бұрын

    I wonder if in your hypothetical model, would vaccumn effect the energy vector?

  • Eric L Michelsen
    Eric L Michelsen  Жыл бұрын +2370

    I teach physics at the University of California, San Diego, including this very topic. Within an hour of watching this, I set up the experiment, and got the result. I have photographs of the experimental setup, and of the oscilloscope traces. I discussed the results at length with a physics professor friend, and we agree on the explanation. In fact, the load gets (nearly) the full voltage (almost) immediately; there is no (visible) ramp-up time, nor delay through the long wires (delay < 10 ns). This is fully consistent with transmission line theory that is well established for about a century. Dr. Muller's Veritasium series is great, but in this case, there are several claims that are incorrect, or at least misleading. There are many subtleties, and I cannot do them justice in a comment. I would enjoy talking with Dr. Muller to clear these up. For reference, I have a BS in Electrical Engineering, a PhD in physics, and I am author of "Quirky Quantum Concepts", an upper-division/graduate quantum mechanics text supplement. This is my first KZclip comment ever.
    Update: I love the Veritasium series, and I have learned a lot from it. To respond to some replies: I chose the simplest case, which I think illustrates the point that power can reach the load without going the whole length of the "wings." The analysis link below the video covers the more-complicated case. My "wings" are 50' hardware store extension cords. My propagation test confirms that coiling them doesn't matter, as expected. My analysis is fully transient, and the circuit transits to steady-state DC over time. Resistance can safely be approximated as zero, but inductance and capacitance cannot, as expected by theory. My load is 270 ohm, roughly the on-resistance of a 50 W incandescent bulb. The characteristic impedance Z ~53 ohm, which is substantially less than the load; that's what's needed for the simple case of near full response nearly immediately (the load is _not_ matched to Z). In this case, the wing capacitance dominates the behavior.
    Consolidating my previous reply: Examples of subtleties: Do two electrons repel each other? (a) Most people would say yes, and I agree. But one could argue (b) No, one electron creates an electric field, and that field pushes on the other electron. This is also correct; it's slightly more detailed, and from a somewhat different viewpoint, but (a) is still correct, as well. But (c) In calculating the force of (b), we use only the E-field from one electron, even though we know both produce E-fields. To use the full E-field, we have to compute force with the Maxwell stress tensor; this is also correct. There are multiple correct views one can take. The video's chain analogy is very good, and correct. Separately, a few replies have hit on the most-direct (IMO) explanation: the capacitance in the wires provides an immediate, physically short path for the electricity to reach the load. The path of current changes over time. Your gut might tell you that the capacitance is too small, but a quantitative transient analysis using standard circuit theory matches the experiment. Special Relativity still stands. More subtleties: characteristic impedance, etc. I do similar demonstrations in class, so I happen to have all the equipment and experience ready to go.

    • daviga1
      daviga1 8 күн бұрын

      @Josh Buhl I don't claim NO energy flow is present outside the wire itself. I point out that the video's premise is that the wire ISN'T where the energy flows, but instead the fields around it carry the energy, and submit my claim that the amount of energy AROUND the wire is insignificant (in nearly all cases) in PROPORTION to the (much greater) amount of energy that travels WITHIN the wire.
      ...which is trivial to demonstrate because if you approch a cable carrying enough voltage you CAN INDEED light up a fluorescent bulb at a distance, but you feel nothing, wheras if you TOUCH that conductor* you would most likely be killed.
      To reiterate metaphoricaly:
      If I had a city water main that leaked a quart every hour, but carried 168,000 GPH it would not be reasonable to make a video with a title card claim of 'Water Doesn't Flow in Pipes'. It IS also incorrect to say 'all the water stays in the pipe'. It can be correct to say something on the lines of 'the pipe carries the water, and an amount leaks out that we typically regard as trivial. We could reduce that, but have decided that it isn't cost effective, because it's trivial'
      *assuming you provide a ground path or the line is sufficiently energized that the differential is dangerous without a ground path, such as a 500 kV line

    • Josh Buhl
      Josh Buhl 9 күн бұрын

      @daviga1 Electromagnetic Fields themselves contain energy, this is a fact. Conducting wires produce measurable electromagnetic fields outside of the cable. this is also a fact. therefore, it is irrefutable, that at least a portion of the energy resides outside the cable. ever seen how a flourescent light can light up even when it's just near a high voltage cable? the insulating cable prevents current flom flowing through your body, it doesn't prevent electromagnetic radiation from passing through your body.

    • daviga1
      daviga1 9 күн бұрын

      @Josh Buhl In your previous comment, you started with "I believe the bit about the Energy being in the fields..." I provided a simple example of why you should not believe that. If the majority of the energy was in those fields, which lie outside the insulation sheath, why, and how, would insulation render a cable safe to handle?

    • Josh Buhl
      Josh Buhl 15 күн бұрын

      @daviga1 Thanks for replying, but I don‘t understand what your point is, nor how whether or not you are shocked by bare wires refutes either the videos premise or my idea of a special rel. violation.

    • daviga1
      daviga1 15 күн бұрын +1

      @Josh Buhl You can safely handle wires with intact insulation. If you touch the bare wire, you will be shocked or burned. There is your rebuttal of the video's first premise.

  • Unbare Ability
    Unbare Ability Ай бұрын +1

    Definitely expected a different answer - as many years ago I plugged my phone in to top-up the charge but my battery actually reduced! Taking my charge backwards instead of increasing like it is meant to do! I can't remember what phone I was using at the time but I'm sure it happened more than once from that device. But not since then.
    It's true, I plugged my phone in to charge and watched it count backwards to depletion! Pretty strange!

    • JRH tv
      JRH tv 8 күн бұрын

      Something shorted to ground.

    • shurlocksam86
      shurlocksam86 25 күн бұрын

      Did you have an iPhone?

  • Tofuto Echnaton Erzmaester Erde
    Tofuto Echnaton Erzmaester Erde 18 күн бұрын

    This is amazing! Thank you so much for enlightening my bulb :D

  • Joe Stevens
    Joe Stevens 7 күн бұрын

    Well, while we are picking at things, my HS math teacher would slap us on the wrist if we said "over" because that is not a math function. We were required to say "divided by" since that leads to better understanding. That has stuck with me for over a half century. Cool presentation.

  • grassroot011
    grassroot011 Ай бұрын +2

    We were taught by the newly released curriculum used by the Navy. Basis Electricity began by imagining a tube, filled with marbles, and one is pushed into one end and one comes out the other instantaneously. This was for DC, Ac they moved back and forth in the tube, or conductor. Were taught the right hand rule and the left hand rule for motors. And we dealt with electron flow and not conventional current flow.

    • Roustam Askerov
      Roustam Askerov 8 күн бұрын

      @JRH tv Are you implying that Hiroshima was the first field trial of OVERsimplification? "See that city? Drop the bomb _somewhere in that area_, it will do the rest!"

    • JRH tv
      JRH tv 8 күн бұрын

      @Roustam Askerov As a whole the military "oversimplifies" a lot (by teaching "applied" science versus tons of theory) so as to condense the time (and cost) required to get technicians into the field and on the job. My Air Force crypto tech school (early 70s) pushed me through a month of my college electronics 101 class in 3 days, literally.

    • Roustam Askerov
      Roustam Askerov 28 күн бұрын +1

      > tube, filled with marbles, and one is pushed into one end and one comes out the other instantaneously
      This is oversimplification. It is true for practical uses like your home lighting circuit. But when are talking long distances like here, Einstein's theory comes into play, which says that no physical interaction can propagate faste than the speed of light (c). So it will not be truly instantaneous, it will LOOK as such because distances involved in practice are minuscule, but in reality it will be /almost/, but /not quite/ instantaneous.

  • Draakie100
    Draakie100 Ай бұрын

    I often ask myself how much science suffers from confirmation bias. Great upload....THANKS !!! I wish everybody a positive life 🍄🌏👁😀

  • SparkyPete93G
    SparkyPete93G 8 ай бұрын +1219

    I'm an electrician from the UK.
    This theory can be proven by holding a florescent tube near a power line. It will glow. My family didn't believe me so I showed them. So glad you explained this in a way they understands fully. Thankyou. Very clever.

    • daviga1
      daviga1 22 күн бұрын

      ​@Shiraishi Chan It's the opposite of a dumb question. A question whos answer can disprove the premise is the apex of scientific achievement. You don't get electrocuted because this video is misleading. Most of the energy flows through the cable. Where there is some validity is to point out that not all of it does. So, a 50,000 volt line might ve able to incinerate flesh and kill instantly if you cut it, but a small amout of 'leakage' several meters away might have no sensation, but can induce enough current to put some glow on a fluorescent bulb.

    • daviga1
      daviga1 22 күн бұрын

      ​@missbond It's not, the claim is (mostly)incorrect. Energy is transmitted in the wire(mostly) - it's just not 100% confined in the wire. We can use the fact that it's incompletely confined for fun applications like transformers, electromagnets, and radios, but it's not useful for turning lights on.

    • Exotic Spy Travel
      Exotic Spy Travel 25 күн бұрын

      Are you sure you proved it?
      Try the same thing with a bulb. If it doesn't shine, then you and the clip are both wrong.

    • Paul Hancock
      Paul Hancock Ай бұрын

      ​@Jazermano you're not allowed to ask those questions

    • John Alexander
      John Alexander Ай бұрын

      Guess what? The fluorescent tube glows because the magnetic field is working on the gas in the tube itself. Toss up an incandescent bulb. Bupkis. :)

  • Tito _
    Tito _ Ай бұрын +7

    Quick question: what would happen if we use the same setting, but with the battery placed 300.000km apart from the bulb, with the cables stretched out between them? Is the important factor the distance from the energy source or the fact that the electric field is already close to the bulb will render the same effect?

    • daviga1
      daviga1 22 күн бұрын +2

      ​@El Barbero Someone else pointed out the time formula us wrong, it's time=distance/C , not time=1/c

    • El Barbero
      El Barbero 23 күн бұрын +3

      Logically speaking you have the smartest question here. And following common sense I think it would take 1 second if we did what you are asking since, it's the distance from the source that matters as we wait so long for the light from the SUN to hit here, it's not instant.

  • Arya Asya
    Arya Asya Ай бұрын

    Thanks for the video. It is amazing explanation. I still have not got it 100% so need to re-watch several times.

  • sanjeev shukla
    sanjeev shukla 26 күн бұрын +4

    So if we cut the wire somewhere in between, do you think bulb will still turn on? Just curious if it’s electric and magnetic field around then a small cut shouldn’t matter as you suggested as well.

    • daviga1
      daviga1 22 күн бұрын +1

      Love the question. if the gap is small enough or the voltage high enough you may see sparks - the symptom of energy jumping that gap. a continuous spark gets called an arc. needless to say, it will impede how much power makes it to the bulb, and may damage things as well.

  • Eduardo Reis
    Eduardo Reis Ай бұрын +4

    This is very interesting indeed! A different perspective about energy flow. I was just wondering...what if the swtich was too far away? Would the light still turn on in 1/c secs?

    • daviga1
      daviga1 22 күн бұрын +1

      ​@Devin Griffith This.

    • Devin Griffith
      Devin Griffith Ай бұрын +1

      The 1 on top should have units of length. In general, it will be d/c, where d is the distance from the switch to the lightbuld.

  • False Progress
    False Progress Ай бұрын +2

    10:47 This must affect offshore wind projects that depend on long undersea cables, especially if you put them far enough out to not be eyesores from shore (usually over 30 miles). It shows that the more local an energy source is, the better.

    • daviga1
      daviga1 22 күн бұрын +1

      Not really.
      1 : More jacketing between electrical element and support strands will diminish the effect.
      2: Power transmission doesn't have the same constraints as communication cabling
      3: Glass fiber (among other materials) is great for structural support and won't affect your cable that way.
      Onshore winds are usually weaker and more variable than offshore. The best place to get energy is where it is abundant, adjusted by the cost of transporting it to its destination. Transmission losses are pretty low these days however.

  • SyTy
    SyTy  Жыл бұрын +154

    I am a lowly aircraft electrical technician and mechanic. But from troubleshooting aircraft systems over the years, a fuzzy picture started to form in my head almost exactly like what you illustrated. And I've used that image to do mental checks in my head against where power is going, and if my diagnostics are correct or I have my test equipment in the wrong place. This video completed the puzzle in my head, and I think a lot of people in the blue collar world who work with electrical systems every day without ever defining the knowledge they've learned from it will appreciate seeing this video.

    • Donna Rourke
      Donna Rourke 13 күн бұрын

      In a and p school it was called inductive reactance,hard to visualize in the 80 s

    • Shadow Gauge
      Shadow Gauge 9 ай бұрын

      Then you will understand this, why do we derive motion is the driving factor in the production of power and energy, this naive assumption force is power when force is an endothermic reaction. As is motion, when we know heat is energy. While I did find myself grateful for the video by the end, and I do very much appreciate it because they tell us what energy isn't.. Thou I would argue in a sorta pointlessly lavish and difficult to understand way (like that statement)... And not even mentioning that heat and voltage literally have a 1 to 1 ratio, just kinda seems like a waste of breath. And you said it, I wonder where the power goes...
      But at the time if you knew that heat was power, and motion was not, wouldn't you have felt more of a clarity of understanding. Tesla lit up flashbulbs with heat leached from the earth by cold mountain air as the sun settled behind the rocky mountains.. it wasn't magic, it was just thermodynamics.

    • Butters Da Baller
      Butters Da Baller  Жыл бұрын

      @SyTy LOL well said SyTy! Machinists make em perfect, mechanics keep em workin' and the pilots just have to fly it!

    • frickxnas
      frickxnas  Жыл бұрын

      @John Martin Well safety is really complicated. Most engineers that do maintenance care about the reliability of the aircraft but that doesn't always lead to safety. Let that be properly handled by manufacturers and the complicated design and production stages.

  • Mark ONeill
    Mark ONeill Ай бұрын

    1/c seconds because that's the most complicated. And I remember how complex that EE 101 was during college. Once they said that a person needed imaginary numbers to calculate resistence, then I know that electrical engineering was partially magic. ....... I could have used this video during college, but I'm still not sure that I get it.

  • Daniel Rkman
    Daniel Rkman Ай бұрын

    I think E because I think the explanation will be something to the effect of the electrons all move at the same time. Like how pushing/adding an extra tennis ball into a tube full of balls results in one being ejected from the other end. That’s my initial guess but I have a feeling it may be D because instant travel sounds like it’s breaking physics.

  • Eric Escobar
    Eric Escobar Ай бұрын

    very very interesting! I wonder if there would be a delay if the bulb was placed at the far end of the lines, away from the battery source?

    • Paul Frederick
      Paul Frederick Ай бұрын

      If there was no delay then there'd be no such thing as network latency.

  • Veech Junior
    Veech Junior 24 күн бұрын

    this makes sense i was riding my dirtbike under huge powerlines and anytime i touched metal on my bike it would shock me pretty hard

  • ADEpoch
    ADEpoch Ай бұрын

    I came here from the followup video where you had to clarrify. Glad I did. Both have been good. It has also been really interesting to see how dissenting voices have reacted. Lots of angry armchair people. My favourite being whee I thanked you in a comment, and someone replied, "This has gone far enough..."

  • Randall Parker
    Randall Parker  Жыл бұрын +711

    I'm 66 years old. As a child, we lived near large transmission lines in a rural area of CA. They passed over one of our pastures. We had a small water pump shed near the base of one of the towers. I "helped" my dad bury the power wires to the pump shed, 400 ft. from our barn/shop when he was installing a new pump. My dad used pipe strapping tape to mount some fluorescent tubes inside and outside of the shed. Everynight the lights were always on and I asked him why. He took me out to the shed, and asked me if I felt anyything... I realized that the hairs on my arms felt tingly, and I felt something in my ears. He explained about how such high voltage cables as above "induce" a magnetic field way around the big cables, that's what gives me the feelings, and what makes the tubes glow like they were wired to something. That had to have been 1960 /61- as I had just started 1st grade. He drew some sketches to show how "he thought" it worked. He gave me a basic electricity book and quizzed me every once in awhile. His sketches looked just like your graphics. I guess my dad WAS a lot smarter when I was younger. LOL

    • Chuck Reed
      Chuck Reed 6 ай бұрын

      Your dad was definitely "smarter than the average bear!" per Yogi.

    • Strange Horizon
      Strange Horizon 6 ай бұрын +1

      That story felt like a scene in a movie, very cool.

    • Rex Schneider
      Rex Schneider 6 ай бұрын

      @Faladrin You'll just confuse yourself worrying about single particles. The effects we're concerned with here are bulk effects and it's important to understand the _magnitude_ of these effects to make any sense of what's going on. If you have a moving charge, then you may have a moving electric field locally, but by definition you have a current, and you can relate the magnitude of the magnetic field directly to the current, without having to try to estimate changes to electric fields in bulk materials and the consequent magnetic field induced.
      What I said about voltage creating electric fields isn't just "sort of right"; it's _exactly_ right, because the vector value of the electric field at any point is precisely the gradient of the potential at that point. regardless of where the voltage is coming from. For example, the voltage that arises from a changing magnetic field will create an electric field that you can characterise without having to work out the movement of charges in order to describe it.
      Of course the effects are inter-related, but the reason why I said what I said in the way that I said it is that in the extremes, you can have a large _static_ electric field that can induce a voltage along the length of a piece of wire without any associated magnetic field (as in static electricity), and you can have a large _static_ magnetic field created by a steady current without any associated electric field (as in superconducting coils).
      Although most of the time both electric and magnetic fields exist together, it is important to have a grasp of the relative magnitude of the effects of each one. If I'm trying to amplify very tiny signals, I may need to shield cables to prevent stray alternating electric fields from adding noise, but I also may need to eliminate earth loops to prevent picking up hum from mains-induced alternating magnetic fields. If I have an idea of the relative magnitudes of each effect, I can see how much effort I need to take in minimising each one, and where compromises have to be made. In some applications the issue of interference for electric fields may be negligible, in others we can ignore the magnetic fields, but we won't know unless we can appreciate the size of each effect.

    • Faladrin
      Faladrin 6 ай бұрын

      @Rex Schneider Electric fields exist anytime you have an electric charge. That could be a single electron or a single proton. You can have a solitary electric point charge such as those particles. Anytime an electric field is moving or changing (so an electron moving or the potential/energy level of the electron is changing) you will have an equal but perpendicular magnetic field matching the electric field. Another way of saying it is a change in voltage or any current at all will result in a magnetic field.
      What you said about voltage creating electric fields is sort of right since any charge will have an electric field. And yes, current will create a magnetic field since that represents a changing electric field. But the way you said it suggests that these things are more different than they are (at least in respect to the relationship with magnetic fields).

  • Bob Whammer
    Bob Whammer Ай бұрын +1

    Yes, i discovered that it normally doesn't flow in wires because just the other day I got shocked by a bolt of lightning. We've HARNESSED electricity to safely flow thru wires.

  • Lambert Lorette
    Lambert Lorette Ай бұрын

    thanks so much for clarifying how it actually works

  • Katherine Casey
    Katherine Casey Ай бұрын +1

    I used to think that electrons flowed through the wires, but I eventually realized that that didn't make sense. However, I had no other explanation. This video is hard to follow, even though I'm currently studying physics/electricity, but it does give me a better idea of what is going on.

    • Volty De Qua
      Volty De Qua Ай бұрын

      @Paul Frederick «electrons don't flow like water unless they are water. But the hydraulic analogy can still be useful to visualize electricity. Just not all the time. It's how a lot of competent mechanics view electricity and it serves them well enough. So I won't quickly dismiss it myself.»
      I do agree - see as & what one needs to see in the respective domain. And keep away from rhetoric and sophistry that make you think you understand something more after seeing tricky videos.
      (this, one more, for Casey)

    • Paul Frederick
      Paul Frederick Ай бұрын

      @Volty De Qua electrons don't flow like water unless they are water. But the hydraulic analogy can still be useful to visualize electricity. Just not all the time. It's how a lot of competent mechanics view electricity and it serves them well enough. So I won't quickly dismiss it myself.

    • Volty De Qua
      Volty De Qua Ай бұрын +1

      Dear Katherine, do not know if it could help, try to think in terms of Shakespeare's "What's in a name", then pass to "What's in a matter that isn't matter", and "What's in a energy". Be wary of those that pretend to know too much what's down there, in the too small to be seen or measured.

    • Volty De Qua
      Volty De Qua Ай бұрын +1

      @Paul Frederick «If electrons don't flow then we can just drop the concept of current.»
      The only certainty, out of common sense, is that something flows. So the current is there, electrons, or whatever else. Could be that it cannot be described, in suitable terms for our brains limited by the need of our space & matter analogies.
      To understand how much the science is impacting our vulgar world vs how much our vulgar world is impacting, requires knowledge of scientific and technological history, and quite a deep thinking.
      Or, in other words, is it the science to drive the achievements, or is it there to explain achievements that happened, and would happen again, without all that theory?
      Imho we need some epistemological genuine thinking paying attention to not get lost in abstract and sterile philosophy recitals.
      etc etc.

    • Paul Frederick
      Paul Frederick Ай бұрын

      If electrons don't flow then we can just drop the concept of current.

  • converdb
    converdb Ай бұрын +10

    Sounds quite esoteric in my opinion. Which is confirmed by the fact that several academics had different views and you collected different answers and hypothesis from them. It’d be interesting to see what those answers were, that was the shocking part of the video to me.
    Thanks! Outstanding work as usual!

    • Maciej Remiszewski
      Maciej Remiszewski 20 күн бұрын

      We have to consider ether first to fulfill the answer.

  • tall32guy
    tall32guy 3 күн бұрын

    love this guy! his presentation style reminds me a lot of Carl Sagan, in Cosmos!

  • Backlash
    Backlash  Жыл бұрын +593

    WOW! I'm 80 years old. Started learning electronics in the Army in 1959. We were taught the "Right Hand Rule" in the study of inductors and transformers. Although we knew about the magnetic field around conductors we never applied that knowledge like this. Thank you for teaching an old man a new trick.

    • Backlash
      Backlash  Жыл бұрын +2

      @Matt Donahue Exactly! That poor elephant.

    • Matt Donahue
      Matt Donahue  Жыл бұрын

      @Backlash you must mean being "westinghoused"?

  • Slim821
    Slim821 25 күн бұрын

    Should have mentioned Stinemetze was the key to designing the waveguide wire also known as a low loss Coax cable. Very important person in History!!

  • David Uliana
    David Uliana Күн бұрын +1

    Holy crap. I have degrees in engineering, have investigated numerous electrical fires and worked for decades developing electro-mechanical devices, and no Electrical Engineer has ever explained electricity this way. Things now make a lot more sense.

  • Happy Home Projects
    Happy Home Projects Ай бұрын +1

    I appreciate this video, thank you for the work you do and helping to move us forward.

    • Happy Home Projects
      Happy Home Projects Ай бұрын +2

      @Hugh Leyton
      Most electronics and computers use DC.
      Most all electronics and computers use EMI shielding.
      Electromagnetic interference shielding

    • Happy Home Projects
      Happy Home Projects Ай бұрын +1

      @Hugh Leyton
      Simply because you've always understood things to work one way doesn't mean you had the complete picture.
      As a matter of fact, the older you get the harder it can be to understand newer concepts. Though this concept isn't necessarily new, but rather now being more fully understood.
      The energizing of the wire induces a field that pushes electrons along the path, from both inside and outside the wire.
      Again, he's not stating that the wire isn't responsible for enabling the flow of electrons, but rather the way that electrons move is different than the simple model we were taught.

    • Hugh Leyton
      Hugh Leyton Ай бұрын

      @Happy Home Projects . . . Sounds as if you are trying to teach your Grandmother how to suck eggs. . . And you have got that wrong as well. .. Yes you can cross signal wires perpendicularly, but not run them in parallel too far to minimise high frequency interference. . . Have you ever bothered to look at car wiring with many wires all in the same harness. ?
      You do NOT get electromagnetic fields from DC in a wire, only a rotating magnetic field. . . Electromagnetic fields or EM is what we get at high frequency, up in the Radio frequencies. . . His picture is just plain Wrong, but with a few things right, but his conclusion is completely wrong. . . I work with Electricity from DC, through Power frequencies, up into electronics and Radio up into the microwave frequencies. . . I do know how electricity works, Derek does Not.

    • Hugh Leyton
      Hugh Leyton Ай бұрын

      @Happy Home Projects Electrical Current, that is the moving Electrons INSIDE the wire will produce a circulating Magnetic field, which does not stretch very far, just mm. . . . . That is why the wires in Transformers are either very close together, or wrapped around a common Core. . . . But that is AC not DC. . . . Sensitive equipment may require shielding from high frequency signals and noise, NOT DC

    • Hugh Leyton
      Hugh Leyton Ай бұрын

      But it is WRONG. . The electrical energy does travel INSIDE the Wire, not by external fields, that is simply very wrong.. . . You have been had.

  • Vern Roach
    Vern Roach Ай бұрын

    I knew the flux around wires was detectable and non contact meters, called "Chirpers" in most trades, is what lets one know, there is voltage available or the circuit is Hot.....Doesn't tell you how much, just that there is some there...Some of this is still hard for me to grasp, but this helped me a lot...thanks.

  • Ahmad Abbas
    Ahmad Abbas 25 күн бұрын

    can you please make a video about the relationship between EM filed and gravity field.

  • Joe Whiley
    Joe Whiley 6 ай бұрын +622

    I am a third year Physics uni student and I can onfindently say that you have managed to explain the poynting vector better than any of my professors ever have...

    • eat hot chip and lie
      eat hot chip and lie 5 ай бұрын

      johnnythepr1ck Yeah I mean what did you expect from someone who's paranoid of the government and talks about "serious implications for aerospace and weapons"??
      Ignore the lunatics. Science will advance without them.

    • John Sikes
      John Sikes 5 ай бұрын

      johnnythepr1ck "Have you conducted any experiments to verify the claims?"
      A better question would be does he even know how to START such an experiment, or any other kind. :-)

    • Sciurus
      Sciurus 5 ай бұрын

      johnnythepr1ck post a link to what, the lectures I mentioned above?
      Unfortunately on most channels if I post a link then my comment ends up being censored or deleted so I put the title of the video lectures in quotes so everyone could search for it on KZclip... it's probably saved under one of my public Playlists if you are really too lazy to search for it lol 😆 Go watch it and see what you think for yourself if you haven't seen it already. I'm only here to point the way! 👉🏻🧐 (Poynting Vector pun lol 😆 😂)

    • Aditya Rakshe
      Aditya Rakshe 5 ай бұрын


  • Pew pew Lasers
    Pew pew Lasers Ай бұрын

    I was pretty upset I had to fast forward the entire video to find out how fast the light would turn on. Good info. It’s fast.

  • Manuel Melendez
    Manuel Melendez Ай бұрын +2

    Looks like a small piece of knowledge that Nikola Tesla had and was willing to share with the world.

  • Aditya Shah
    Aditya Shah 28 күн бұрын +2

    Great effort. However, I still have a difficult time to understand how we get shocked if we touch a live wire if the electricity is not by transmitted through wires? Plus, is it then ok to say that if we physically don't connect any appliances ( bulb etc.) But have close enough connections we still get it turned on ? Please try to answer as I am curious. Once again love your work.

    • Tnpcook
      Tnpcook 16 күн бұрын

      Those are a fun few questions. Here's how I understand it, hopefully someone smarter than me can pitch in.
      At the top of it, we need to separate 'shock' from 'fields' and 'electricity'. There are a bunch of components to shocks, since they are a single perception of many interactions. (you can get burned by electricity without feeling a shock!)
      There are a couple things that go on, there's electro-motive(moving electrons) forces, and fields. I'm gonna mostly go after the first, electro-motives.
      TL;DR, You've created a path that will guide (conduct!) electrons, electrons are already on this path and they will start to move too. This motion can cause problems, even before the external electrons move over in appeciable amounts.
      A little more elaborated- separate a shock into a few parts. Firstly, a shock isn't exclusively something that 'enters' you at a start point. It begins when there is an arrangement of a pathway (sometimes regrettably through us, sometimes it's already there but there isn't enough voltage to make it viable at its' resistance). If there is a sufficient path, it will become a 'wire'. You'll have a route through the body that guides (conducts!) electrons.
      When you create that situation and a pathway through the body becomes the 'new wire', the electrons that are ALREADY there will begin to move as well. This is how an alternating current with a back and forth motion can cause damage despite the electron motion not progressing; by invoking this same motion on the electrons on this improvised 'wire'/path through a person.
      This is where the nasty part starts, if enough electrons are moving (a big current), they can polarize/denature/etc SCREW WITH nerve function, which is important to things like our heart. This is a separate problem from fields, which we're actually pretty resistant to in comparison.

  • berke halavurt
    berke halavurt Ай бұрын

    i really wanna thank you for rekindling my love for electromagnetism. you really helped me

  • Primitive Christ
    Primitive Christ Ай бұрын

    Third time watching. God I'm just realizing where the wall is. I learned that the connection is indeed drawn in two parts. As it's shown in the film, the power lines all travel in pairs. Electricity is a weird thing. And I was able to listen to the part of the steel insulators, too. So yea, schooled again.

  • Anders Wraae
    Anders Wraae  Жыл бұрын +235

    At the end of a very intese physics course and right after the exams, our teacher ended it by telling us that everything we had just learned about the flow of energy in an electric system was most likely wrong and mentioned something about energy not passing through the cables.
    Now I finally know what he meant. Thank you 😅🙇

    • PoopFartLord
      PoopFartLord  Жыл бұрын

      @Electron Resonator I mean you can do that, and it has been done, and is constantly being done, just not on a large scale. Radio waves etc are all wireless transmission of energy.

    • Hcrdfju
      Hcrdfju  Жыл бұрын

      @RocketPig To structure current. current emit energy but the energy isn't flowing in the same direction as the current.

    • AgainstAllEnemies_Foreign&Domestic
      AgainstAllEnemies_Foreign&Domestic  Жыл бұрын

      @Tony Su Your point is half correct. DC and AC is the difference..DC uses the entire diameter of a conductor evenly,while with AC the frequency of (signal or power) will act as a wave guide with higher F moving out away from the center of medium...AKA skin effect. And i agree,most of the video is JUNK/BS.

    • RocketPig
      RocketPig  Жыл бұрын

      @CaptiveCat69 Not coming across that way

    • AgainstAllEnemies_Foreign&Domestic
      AgainstAllEnemies_Foreign&Domestic  Жыл бұрын

      @Electron Resonator WTF resonator....When,how,why he only passed away in 43rd year of NOT CURRENT century, rofl.

  • chirag mukhija
    chirag mukhija 28 күн бұрын

    watching it 3rd time and now after studying electricity and magnetism this is blowing my freakin mind !!!

  • DSCI
    DSCI 7 күн бұрын

    I'm looking for a second source on this. Do you have any references to this without going into a college course?

  • Cathy Vinck
    Cathy Vinck Ай бұрын

    thank you, well explained 👏

  • Mriganka Roy
    Mriganka Roy 5 күн бұрын

    Brilliant video.. brilliant visualisation.. thank you

  • @ TravelingWithaBBC
    @ TravelingWithaBBC Ай бұрын

    What are the best books to understand this in a newbie language?
    Thanks for sharing and creating the video

  • Anton Leimbach
    Anton Leimbach  Жыл бұрын +152

    I’ve been an electronic technician since the 90’s and I remember one of my electronics instructors explaining this to us and it still blows my mind all these years later. Fascinating video, thank you for posting.

    • A B
      A B  Жыл бұрын

      I’m fairly certain the math allows it to be anyhow. Plus you would have to have a source very very powerfully which would negate the example anyhow.

    • A B
      A B  Жыл бұрын

      I was a union plumber and now a senior in chemical engineering. Is he saying that the waves instantly form because I was and he alludes to with the 1/C answer that the waves still need time to set up and propagate down the path of the wire to do so. The Poynting vector can be much slower than C it just can’t be faster.

    • akh345
      akh345  Жыл бұрын

      @Yogurtmaker From the switch to the light.

    • Yogurtmaker
      Yogurtmaker  Жыл бұрын +3

      Can you explain something? When I switch my house light on, what distance is taken into equasion? From lightbulb to nearest transformer?

    • Clément Dato
      Clément Dato  Жыл бұрын +1

      I am not convinced. I think the E field needs to propagate along the wire to have enough intensity to light up the bulb. Otherwise, if I disconnect the bulb from the wire, according to the video, it seems the light would still be on, which cannot be right. Would you might help me understand this?

  • A R
    A R Ай бұрын

    Great video .. I understood nothing, but I feel smarter 🎉

  • slimcama
    slimcama 26 күн бұрын

    This really changes one's perspective especially mine 🤜

  • Richard Hall
    Richard Hall 29 күн бұрын +1

    A teacher of mine recounted a story about a student being asked 'What is electricity?' by his professor. The student stumbled for a bit before answering 'I did know, but I've forgotten'. The professor replied 'well that's inconvenient because the only other person that knows is God....'

  • My Name
    My Name Ай бұрын +2

    So if the energy isn’t contained within the wire then how come we don’t get a minor electric shock by standing near a circuit? This concept is mind blowing! So Tesla’s technology IS being used today they just figured out a way to monetize it huh? I’m gonna be thinking about this for weeks to come 🤦‍♂️

  • Saqib Khan
    Saqib Khan 13 күн бұрын

    I would highly recommend “story of electricity” by Jim Al-Khalili to understand the whole concept of electricity, how it was first discovered and how over time countless other technologies were developed by the discovery of electricity

  • giovannipu
    giovannipu  Жыл бұрын +384

    Hello Derek, a physics professor here. I love your videos and I subscribe to your channel - in all honestly, I consider it the best example of public communication of physics and science I have ever met - I am not exaggerating. I actually used some of your videos when teaching to my students. However, you did not convince me with this one - not that I love you any less for this. I have similar objections to some that have been made by others here. The explanations of the fields, and the Poynting vector are gorgeous and very instructive, by the way. But I have tried to explicitly calculate the flux of the Poynting vector on the bulb, and I find it to be quantitatively a small effect (quickly dropping with distance of the bulb). Yes, there is *some* disturbance at the bulb, but I think it is a bit misleading to just say that it "turns on". I suggest to have this checked by other people - I would be very curious to see a follow-up on this. You are actually tempting me to try this out in my own lab.
    Anyway, even if it turned out you had slipped on this one, that does not change my opinion about your work. Physics is non-trivial, and what really matters is to have the right scientific approach to problems, not to never ever make a mistake (even Galileo did) - eventually things sort themselves out if you follow the right track.

    • Ted Rees
      Ted Rees  Жыл бұрын

      @giovannipu But the initial current will not reach the bulb until the voltage at the bulb rises due after the transmission time delay.

    • Ted Rees
      Ted Rees  Жыл бұрын

      @SpeedFlap All wire has inductance and capacitance. They are both finite element models for the em fields.

    • Ted Rees
      Ted Rees  Жыл бұрын

      This video is misleading. Just because the Poynting vector points in the direction of energy flow, it doesn't mean that it causes the energy flow. The conclusion is also dead wrong. Anyone working in a lab with a fast scope can observe the time it takes for a signal to flow down a wire. You don't need a stupid impossible single wire 2 light seconds long. All you need is a few feet of wire on a bench, and a signal generator with a fast pulse generator. Sync the scope from the generator, and probe along the wire. you will see that the pulse is delayed a bit more than 1 nano second per foot. Putting the end of the wire next to the signal generator doesn't make the time delay go towards zero.
      By the way, for fast signals, the wire should be a transmission line, that consists of another return line spaced closely to the signal line, that is grounded. It could be a twin pair, or a twisted pair, or a coax with carefully crafted test points. The load should be a resistance equal to the characteristic impedance of the transmission line. Otherwise, you get the signal bouncing from the end of the line and traveling back to the generator.

    • Ersin Emre
      Ersin Emre  Жыл бұрын

      Professor all your calculations are inaccurate because of we don't know how fast the space is expanding. He is good in this video because İ always thought what the hell a lot electrons coming from.

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      billboard NEWS  Жыл бұрын

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  • C G
    C G Ай бұрын

    could someone explain how this interacts w' more than one object, for example instead of just one light globe, add a resistor linked in with 2 or 3 light globes and say a speaker. i see how it works and it makes sense I'm just having issues visualising it w' multiple objects in the circuit. thanks for the vid tho really usful, i may only be doing a level 2 in electronics but it still fun to dive a little deeper sometimes :)

  • Mehmet
    Mehmet 11 күн бұрын

    Ok nice, but the current model is actually a little bit easier to understand 😂 At the end somehow magically energy is flowing :D

    DARTHNECRION 10 күн бұрын

    So does this mean there’s a massive electrical field between the power plant and my home? I’m more confused after watching this than I was before watching it… 😵‍💫

  • apostolis trigkas
    apostolis trigkas Ай бұрын +3

    What happens if you would put the bulp not next to the battery (so it can make instant electromagnetic field)but at the other side of the earth if we imagined these cables where so long .would the result be the same or would it need some more time for the bulp to open for example 1 sec or 1/2? Thank you

    • yaric4
      yaric4 10 күн бұрын

      it will not be the same result, because electromagnetic field speed is speed of light.

  • Baldwin Wallace
    Baldwin Wallace Ай бұрын

    Is there a way to use this electricity / power from the magnetic field without touching the wire? Could you put an LED yard light (on a wooden pole) close enough to the overhead wires - that lead into my house - to turn it on? It sure seems like I could and I am going to try it.

    • Paul Frederick
      Paul Frederick Ай бұрын

      You can induce a current in a conductor from the magnetic field generated by flowing current. But that current has to change, or your pickup conductor has to move. There has to be some movement between your pickup and the magnetic lines of flux. That's what transformers do. They couple currents. When you apply alternating current to one winding it induces a current in the secondary winding. The two coils are galvanically isolated though. Unless it's an autotransformer. Magnetism obeys the inverse square law though. Field strength drops with the square of the distance. Some overhead wires carry very high voltages so be careful. You might want to watch some videos of high tension wires being discharged. It is sobering stuff.

  • Matteo L.
    Matteo L.  Жыл бұрын +240

    I think one of the most difficult things about the Poynting vector is to visualise the cross product in your mind. That video with all fields represented in space is extremely helpful and should be shown in EM courses.

    • Ferretcatcher
      Ferretcatcher  Жыл бұрын

      Poynting vector is a redundant term; all physicists know that vectors point!

    • Alex Maltais
      Alex Maltais  Жыл бұрын +2

      I don't think this video is appropriate for a university course.

    • Randy Pittman
      Randy Pittman  Жыл бұрын +1

      Once again I remember why I nearly failed E&M in college.

    • Eugene Bird
      Eugene Bird  Жыл бұрын +4

      The vector isn’t a real thing, it’s just a mathematical device.

    • marvinalbert
      marvinalbert  Жыл бұрын +1

      @Isaac Groen Actually arrow directions are pretty wrong, they're much more parallel to the wires.

  • pathung2002
    pathung2002 18 күн бұрын

    It's intriguing and counter-intuitive. What if we place the light bulb inside a box shielding all EM waves?

  • MK gamers
    MK gamers Ай бұрын

    Sir I am a pakistani but i love your video , it cleared all my struggles .
    Thank you for creating a help full video

  • bunakkaptan
    bunakkaptan 11 күн бұрын

    Thanks Bro.I learned something useful today

  • Alan Sellers
    Alan Sellers 20 күн бұрын

    So how does Coax and similar signal transmission line fit into this considering it is so effective though it purposely uses a grounded shield? That sounds a lot like your trans-atlantic cable example, but with the opposite result.

  • Ameya Bapat
    Ameya Bapat 5 күн бұрын +3

    Firstly great content as usual. I have two questions
    1. How does battery drain? What does it loose exactly?
    2. How do power companies calculate usage and bill? When we say we consumed X amount of electricity, What do we actually consume from the main line that we get from nearby transformer to our house? As the electric field is the one which triggers electric appliances to switch on.

    • Carl Hansen
      Carl Hansen 2 күн бұрын

      Question 1:
      There are oxidation/reduction reactions going on inside the battery, that cause on electrode to gain electrons and return to its elemental state, and the other electrode to lose electrons and become its corroded form. It is the chemical energy of the electrodes' chemical identity, that identifies the amount of energy presently stored in a battery.
      A battery isn't really charged or discharged, as it is always net neutral. It is the amount of energy available in the chemical domain that changes with what we call charging and discharging.
      Question 2:
      The power company calculates the product of voltage and current, and integrates it, and stores the result in the meter at your service point. You are not directly responsible for paying for inefficiencies with the transmission and distribution. All that matters for the bookkeeping on your bill, is the cumulative energy that makes it to your service point, where ownership switches from being utility-owned equipment to customer-owned equipment.
      In an abstract sense, we all pay for the transmission and distribution losses, because the utility ultimately has to get someone to pay for that expense of theirs. But you aren't necessarily charged more for being on a less efficient feeder.

  • TechPassion
    TechPassion  Жыл бұрын +171

    I think the best part of this video isn't just the information it presents, but also the conversation it sparks in the comments! People asking questions, people trying to understand what's being said, and even people providing counter-arguments in certain scenarios where what Derek explains doesn't seem to match up. I think having civil discussions helps a ton, thanks Derek + the Veritasium community! This video and the comment section is genuinely interesting to go through

    • markmd9
      markmd9  Жыл бұрын

      @zekicay let's expand the experiment a bit,
      Let's say that the distance is not to the moon but to About Mars 30 minutes.
      You have a 12v battery, super conducted wire (no resistance - no loss in voltage) and 12v 💡.
      Can you please tell me what voltage will you have after 1/c seconds for the light to shine? Because 12v will come only after half an hour if there is no break in the line somewhere near Mars.

    • Cattywhompus
      Cattywhompus  Жыл бұрын

      Agreed. The intense amount of focus required for me to keep up is well worth the payoff of learning what you have to teach. You truly have such a unique mind and brain suited toward learning, curiousity, teaching, and excitement.
      Legitimately thank you for all you do Derek. Words can describe so much our appreciation for you. Sagan-esque as far as science educators go imho. Thank you for being you!

    • zekicay
      zekicay  Жыл бұрын +5

      @markmd9 He is partially correct and partially wrong. There will be some small energy transfer between the bulb and the battery in 1/c but the bulk will happen after more than 1s.

    • Kanglar
      Kanglar  Жыл бұрын +7

      I think he is being somewhat intentionally deceptive/vague in the video on purpose to cause this :P
      He's not wrong, it's just a weird perspective.

  • Marshall Curtis
    Marshall Curtis Ай бұрын

    Fascinating vid dude! Now you say power does not actually travel through the wires, but around the wires. But when you disconnect the circuit, the light bulb goes off. Could it be that the energy flows BOTH through the wires as well as around the wires?

  • James Eddy
    James Eddy Ай бұрын +1

    This would have been a great topic if I were and electrician or a psychist.

  • Syed Tuan syed
    Syed Tuan syed 15 күн бұрын

    great content increase public knowledge 😊