I'm Brian Haidet - PhD in Materials Science, but I'd also describe myself as artist, maker, and Hawaiian shirt enthusiast. On this channel, You'll find my side projects and favorite physics demos - I hope you enjoy!
Point: Electrons moving through the wire is not where the power is coming from. Electrons don't really move through the wire at any appreciable speed. Most electrons change direction (AC) back and forth and ultimately don't really go anywhere. They do set up an electric field and the power is conveyed by that field, not by actual electrons. There is more too it, but the idea of electrons flowing through wires is just how we describe it as it is easier for people to think of it that way, but that is not really what is happening. As a cool experiment, if you set up a long wire 180,000 miles long and stretched it out 90k miles long in one direction that comes right back another 90k miles...(180k miles or one second travel time for light) and attached a lightbulb at the end, the bulb will still go on virtually instantly, not one second (yes, electrical power moves slower than light, but you get the idea) after the power is is turned on.
@Hells_boiler_room20 сағат бұрын
So basically If you mix it it will mix
@dakotaschuck21 сағат бұрын
this is fantastic practical work. bravo.
@danielw.487621 сағат бұрын
"Messy and disordered" With the ink in water example, once it actually gets the most "disordered", the ink is pretty much evenly spread out and it looks more ordered than when the ink is still mixing in.
@botondbenyovszky6621Күн бұрын
But isn't it basically the effect of Lorentz force? After the switch is turned on, the electrons that start moving create a magnetic forcefield that generates an opposite current in the other wire that would cancel out the magnetic force! In this experiment the two sides of the circuit were going in the opposite direction, and this way both sides had a pair that would generate the necessary inducated electric flow in their parallel flow. What you could try, is put all the wires on the same side. So all the 4 wires from the table would go in the very same direction. My prediction is that the magnetic fields would cancel out, and the experienced inducated current would almost completely disappear!
@MileBTestLabElectronicsКүн бұрын
Man you are annoying. Face expressions moving head speaking, all in. Regardless of what you talk about yet your character is not watchable. Did you honest ever watch yourself. Stop making all those facial expressions concentrate on subject don’t try to be funny it’s not for you. Others can do as probably they are funny characters and it suits them. Trust me. You are not one of those. Would make channel more watchable if it looks more professional. Being funny and mixing nuts is not watchable inc facial and body movements during the speaking makes watchers feel deflection of the screen.
@andrewg9457Күн бұрын
What is an object
@hendrikbockКүн бұрын
Funny how I accidentally ran into this video about a question which I thought about when I was in school. Anyhow the video is done so perfect I am really happy I found it!
@offensiveintensive1034Күн бұрын
optic fiber is close and still NO
@AlphaPhoenixChannelКүн бұрын
The signals in this experiment went faster than fiber optic
@offensiveintensive1034Күн бұрын
answer is NO
@davidandrews2883Күн бұрын
Brilliant experiment. Quite elegant in fact. Thank you. Keep them coming.
@edwardscrase6136Күн бұрын
Electrons have mass.
@alexhuseman9472Күн бұрын
Is the reason for the voltage to go faster than electrons is because voltage leads current
@crabjitsu7816Күн бұрын
You went full mathematician at 4:30 lol. A good engineer does finite element analysis. Break the item into small, easy to define, individual elements, and then extrapolate each element into the whole. Really enjoyed the video!!!! My answer for your multiple choice question is E. The material elements of the steel rod wouldn't be able to sustain being pushed and it would just buckle somewhere in the middle. The other end wouldn't move at all. BUT, if we're gonna talk about infinitely strong materials being pushed by infinitely strong guys then......I think the real world way this world work is that it would move at the speed of the waveform traveling through the material. So the speed of it moving would depend on the physical material specifications of the rod, or C.
@Radulf666Күн бұрын
Since time is only an illusion and only the changes of entropy, does this mean, that it's also only the possibility that time goes forward? Is it possible that the “time” goes for a trillionth second backward (Reducing the entropy) once in a googol of time?
@muser7935Күн бұрын
Can't thank you enough
@mitchjohnson4714Күн бұрын
So I get how entropy works, but I’m having trouble even imagining the old “all the molecules in one corner of the room” idea. I’m just having trouble imagining a scenario where that could ever occur. I get that it’s a one in a whatever huge number chance; I’m just having trouble even imagining the scenario leading up to it. It occurs to me that it would be easier for me to imagine if I saw one of these reverse videos where you ran a simulation with a million particles all with different initial velocities all starting in one corner and then showed the simulation running backwards. Would you be so kind as to do that, if you can?
@BigChimpin1Күн бұрын
25:00 did anyone else notice the thunderstorm happening outside the garage door windows
@James1122-qu7wdКүн бұрын
Answer C
@crsm42Күн бұрын
All we need is an Infinite probability drive. Don't forget your towel.
@trustthedogsheneverlies644Күн бұрын
Does this apply to inertia? Shouldn't all reactionary forces also be 'realised' at the same rate? So the inertia should be directly proportional to the speed of sound as the mass of more of the displaced bar is reasised.
@flannigan7956Күн бұрын
Highly technical!
@kelvinelrick807Күн бұрын
You didn't do the Monty Python intermission. :(
@giorgiodepascalis6104Күн бұрын
Beautiful video, just one thing, the second law of thermodynamics states that the entropy of an isolated system cannot decrease. So it can stay constant (and maximum) or can increase. Mathematically it corresponds to state that the function entropy (S) is a non decreasing function of time, so dS/dt≥0.
@kanayadeliz2584Күн бұрын
I knew which ball-rolling clip was forwards, because you rolled the first ball slower so that you could accurately hit it with the second ball!
@sashareinhard6645Күн бұрын
i have that same scope :3c its so good
@joeisuzu2519Күн бұрын
Awesome work. Thank you for the lesson. It has taken me many years to understand entropy. Excellent methodology to expose nature of entropy. Well done
@CatherineKimportКүн бұрын
I've always thought the hardest thing to understand about entropy is the nomenclature and conventions. "Entropy will always increase over time" is something my intuition doesn't know what to do with. But if you think of it as a "sortedness" quantity instead and say it will always dissipate over time... that just seems obvious.
@CatherineKimportКүн бұрын
I always thought the most confusing part of entropy was the nomenclature and conventions. When you phrase it as "entropy will always increase over time" my intuition doesn't know what to do with that statement. It makes so much more intuitive sense to me to think of it as some "separatedness" quantity dissipating over time.
@justarandomchannel1319Күн бұрын
i mean technically you could win the lottery once aand have you win the lottery for the rest of your life
@JBo-fm9xsКүн бұрын
Gladly presented to us....meth
@ArayStrakКүн бұрын
I see the surplus voltage from the disconnected side mostly flows into the side of the connected wires instead of back to the battery. I wonder how much this can be manipulated with multiple branches, thickness of wires, and different conductive materials. It could possibly take much much longer for electricity to reach the intended point
@ArayStrakКүн бұрын
or am I just reinventing an existing piece of hardware
@thepocketmonstermanКүн бұрын
my guess is c
@feedvidКүн бұрын
Can you do an experiment where you fill the AC duct with water to see if the bps changes? :-)
@ykyjohnКүн бұрын
that made me think about life, so life is a product of entropy :)
@jensphiliphohmann18762 күн бұрын
33:50 _Positive charge carriers don't really exist._ Yes, they do: Cations, such as metal ions. In salty water, it's Natrium ions.
@jensphiliphohmann18762 күн бұрын
08:50 _Voltage is one of the least intuitive things you come across ..._ I kind of disagree. Voltage is electrical potential difference, similar to gravitational potential difference ΔΦ = g∙Δz between two points on Earth where g ≈ 10ms⁻² is the gravitational field strength near Earths surface and Δz is the height difference (let be z = 0 on sea level, for example).
@valeriooddone2 күн бұрын
The best explanation of entropy I have ever seen. Thank you!!
@alexmcd3782 күн бұрын
Nature abhors a gradient
@martinda74462 күн бұрын
Flipping a switch is NOT DC. Instantaneous or short term events - Its exactly what your videos explaining the propagation of a DC field are about. Square wave is all odd harmonics... As you explained.. Anyhow I wrote it now,
@martinda74462 күн бұрын
That was goddamn genius. Loved it.
@georgeliquor29312 күн бұрын
Do the electrons have inertia
@Tristanks2 күн бұрын
14:15 we do the same thing in astrophotography actually. We put our cameras into MF (Manual Focus), then we aim the camera at the brightest star in the sky, and focus it so the star is as small as it gets. Gives us the sharpest result.
@LuisFernando-hy6gn2 күн бұрын
Intuitions tells me it should be D: I guess the electric field should be what commands the current behavior, but we need to create that field first. Edit: after the water channel model, I think the right answer could probably be B, but I am not sure... I maintain my initial guess. I like the idea of the flow being transient as a system but I still feel the electric field must have something to do here
@philipmcdonagh10942 күн бұрын
I don't know you've left one end open and shorted the other. What would be interesting to know what would happen if you put a light bulb or whatever on each wire one twice as powerful than the other. Would the electricity travel faster to the more powerful one. Always thought it was the current that varied.
@aviandragon13902 күн бұрын
I was a little weirded out by the verbiage of non-living objects "deciding what to do," but overall a great video.
@kunzadar2 күн бұрын
There is a nice analogy for evolution by natural selection in the coin flip scenario. Life uses energy to reverse entropy. If entropic randomness is flipping all coins until you get all heads (1 in 1028 chance), then random mutations in evolution is the same but you only flip the coins that come up tails. You will flip fewer coins every time and it will only take log2(10) flips on average or about 3.2 passes.
Пікірлер
Wins the lottery tomorrow and dies...
Point: Electrons moving through the wire is not where the power is coming from. Electrons don't really move through the wire at any appreciable speed. Most electrons change direction (AC) back and forth and ultimately don't really go anywhere. They do set up an electric field and the power is conveyed by that field, not by actual electrons. There is more too it, but the idea of electrons flowing through wires is just how we describe it as it is easier for people to think of it that way, but that is not really what is happening. As a cool experiment, if you set up a long wire 180,000 miles long and stretched it out 90k miles long in one direction that comes right back another 90k miles...(180k miles or one second travel time for light) and attached a lightbulb at the end, the bulb will still go on virtually instantly, not one second (yes, electrical power moves slower than light, but you get the idea) after the power is is turned on.
So basically If you mix it it will mix
this is fantastic practical work. bravo.
"Messy and disordered" With the ink in water example, once it actually gets the most "disordered", the ink is pretty much evenly spread out and it looks more ordered than when the ink is still mixing in.
But isn't it basically the effect of Lorentz force? After the switch is turned on, the electrons that start moving create a magnetic forcefield that generates an opposite current in the other wire that would cancel out the magnetic force! In this experiment the two sides of the circuit were going in the opposite direction, and this way both sides had a pair that would generate the necessary inducated electric flow in their parallel flow. What you could try, is put all the wires on the same side. So all the 4 wires from the table would go in the very same direction. My prediction is that the magnetic fields would cancel out, and the experienced inducated current would almost completely disappear!
Man you are annoying. Face expressions moving head speaking, all in. Regardless of what you talk about yet your character is not watchable. Did you honest ever watch yourself. Stop making all those facial expressions concentrate on subject don’t try to be funny it’s not for you. Others can do as probably they are funny characters and it suits them. Trust me. You are not one of those. Would make channel more watchable if it looks more professional. Being funny and mixing nuts is not watchable inc facial and body movements during the speaking makes watchers feel deflection of the screen.
What is an object
Funny how I accidentally ran into this video about a question which I thought about when I was in school. Anyhow the video is done so perfect I am really happy I found it!
optic fiber is close and still NO
The signals in this experiment went faster than fiber optic
answer is NO
Brilliant experiment. Quite elegant in fact. Thank you. Keep them coming.
Electrons have mass.
Is the reason for the voltage to go faster than electrons is because voltage leads current
You went full mathematician at 4:30 lol. A good engineer does finite element analysis. Break the item into small, easy to define, individual elements, and then extrapolate each element into the whole. Really enjoyed the video!!!! My answer for your multiple choice question is E. The material elements of the steel rod wouldn't be able to sustain being pushed and it would just buckle somewhere in the middle. The other end wouldn't move at all. BUT, if we're gonna talk about infinitely strong materials being pushed by infinitely strong guys then......I think the real world way this world work is that it would move at the speed of the waveform traveling through the material. So the speed of it moving would depend on the physical material specifications of the rod, or C.
Since time is only an illusion and only the changes of entropy, does this mean, that it's also only the possibility that time goes forward? Is it possible that the “time” goes for a trillionth second backward (Reducing the entropy) once in a googol of time?
Can't thank you enough
So I get how entropy works, but I’m having trouble even imagining the old “all the molecules in one corner of the room” idea. I’m just having trouble imagining a scenario where that could ever occur. I get that it’s a one in a whatever huge number chance; I’m just having trouble even imagining the scenario leading up to it. It occurs to me that it would be easier for me to imagine if I saw one of these reverse videos where you ran a simulation with a million particles all with different initial velocities all starting in one corner and then showed the simulation running backwards. Would you be so kind as to do that, if you can?
25:00 did anyone else notice the thunderstorm happening outside the garage door windows
Answer C
All we need is an Infinite probability drive. Don't forget your towel.
Does this apply to inertia? Shouldn't all reactionary forces also be 'realised' at the same rate? So the inertia should be directly proportional to the speed of sound as the mass of more of the displaced bar is reasised.
Highly technical!
You didn't do the Monty Python intermission. :(
Beautiful video, just one thing, the second law of thermodynamics states that the entropy of an isolated system cannot decrease. So it can stay constant (and maximum) or can increase. Mathematically it corresponds to state that the function entropy (S) is a non decreasing function of time, so dS/dt≥0.
I knew which ball-rolling clip was forwards, because you rolled the first ball slower so that you could accurately hit it with the second ball!
i have that same scope :3c its so good
Awesome work. Thank you for the lesson. It has taken me many years to understand entropy. Excellent methodology to expose nature of entropy. Well done
I've always thought the hardest thing to understand about entropy is the nomenclature and conventions. "Entropy will always increase over time" is something my intuition doesn't know what to do with. But if you think of it as a "sortedness" quantity instead and say it will always dissipate over time... that just seems obvious.
I always thought the most confusing part of entropy was the nomenclature and conventions. When you phrase it as "entropy will always increase over time" my intuition doesn't know what to do with that statement. It makes so much more intuitive sense to me to think of it as some "separatedness" quantity dissipating over time.
i mean technically you could win the lottery once aand have you win the lottery for the rest of your life
Gladly presented to us....meth
I see the surplus voltage from the disconnected side mostly flows into the side of the connected wires instead of back to the battery. I wonder how much this can be manipulated with multiple branches, thickness of wires, and different conductive materials. It could possibly take much much longer for electricity to reach the intended point
or am I just reinventing an existing piece of hardware
my guess is c
Can you do an experiment where you fill the AC duct with water to see if the bps changes? :-)
that made me think about life, so life is a product of entropy :)
33:50 _Positive charge carriers don't really exist._ Yes, they do: Cations, such as metal ions. In salty water, it's Natrium ions.
08:50 _Voltage is one of the least intuitive things you come across ..._ I kind of disagree. Voltage is electrical potential difference, similar to gravitational potential difference ΔΦ = g∙Δz between two points on Earth where g ≈ 10ms⁻² is the gravitational field strength near Earths surface and Δz is the height difference (let be z = 0 on sea level, for example).
The best explanation of entropy I have ever seen. Thank you!!
Nature abhors a gradient
Flipping a switch is NOT DC. Instantaneous or short term events - Its exactly what your videos explaining the propagation of a DC field are about. Square wave is all odd harmonics... As you explained.. Anyhow I wrote it now,
That was goddamn genius. Loved it.
Do the electrons have inertia
14:15 we do the same thing in astrophotography actually. We put our cameras into MF (Manual Focus), then we aim the camera at the brightest star in the sky, and focus it so the star is as small as it gets. Gives us the sharpest result.
Intuitions tells me it should be D: I guess the electric field should be what commands the current behavior, but we need to create that field first. Edit: after the water channel model, I think the right answer could probably be B, but I am not sure... I maintain my initial guess. I like the idea of the flow being transient as a system but I still feel the electric field must have something to do here
I don't know you've left one end open and shorted the other. What would be interesting to know what would happen if you put a light bulb or whatever on each wire one twice as powerful than the other. Would the electricity travel faster to the more powerful one. Always thought it was the current that varied.
I was a little weirded out by the verbiage of non-living objects "deciding what to do," but overall a great video.
There is a nice analogy for evolution by natural selection in the coin flip scenario. Life uses energy to reverse entropy. If entropic randomness is flipping all coins until you get all heads (1 in 1028 chance), then random mutations in evolution is the same but you only flip the coins that come up tails. You will flip fewer coins every time and it will only take log2(10) flips on average or about 3.2 passes.
As always, such a great video!
I mean, it _could_ happen...