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Electricity Doesn't Flow Through Wire

It would be useful from my POV if, when posting a youtoob link, people could also add a couple of lines to outline what it shows/covers. I can then decide if says something I already know, or looks interesting - or might be flawed. Save time fetching and looking at items that don't add much for me. Should help others in a similar way to decide.
 
I agree with Jim.
But seriously, everything we learnt is false?
What next? We don’t understand why transistors work?
Billions of them in microprocessors?
 
Jim Audiomisc said:
It would be useful from my POV if, when posting a youtoob link, people could also add a couple of lines to outline what it shows/covers. I can then decide if says something I already know, or looks interesting - or might be flawed. Save time fetching and looking at items that don't add much for me. Should help others in a similar way to decide.
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That's a worthwhile point, although I'm reticent about doing it. IMO, any summation is inevitably biased, and glosses over the salient points within the video, similar to a newspaper headline. The video was short enough that I felt it could speak for itself.

But if you really want it: This most recent video states that the circuit as described in the original video could also be modelled as a capacitor, inductor, or antennas (sending and receiving). These are valid interpretations, but they overlook the intrigue of the physics behind it all.
 
• In this video, Captain Kirk restores the ship's power after Finney's attempt at sabotage.

• Captain Kirk grapples with Finney in main engineering.

• A fight breaks out in which Captain Kirk's shirt gets torn!

• Finney swings at Captain Kirk with a wrench, but misses.

• Captain Kirk then rains blows upon Finny, who now, beaten and sobbing, tells him where he had sabotaged the primary energy circuits.

• The damage Finney caused was considerable, but not irreparable.

• Captain Kirk is able to effect repairs by yanking out some ginormous electrical cables before the ship's orbit decays completely.


Joe
 
Interesting stuff. ...On the next installment will they attempt to prove that the world is not round? But not flat either.
 
Mike,

Thanks for posting this.

I felt that I should understand this better having done a physics degree nearly 40 years ago. But as Maxwell's equations were poorly taught, I never really got it. This video and others I found recently have made Maxwell's equation easier to understand (in theory and in practice), which is great.

Ian
 
The problem is, and has been troubling me, that having watched these videos, I can see how cable lifters might actually make a difference. Ouch that hurt to say.
 
Ian Jack has described the teaching of physical processes and systems taught up to A level as “lies to children”. They are given a superficial understanding but actually the way things actually work is can more gnarly, complicated and counter-intuitive than can be easily understood.

On the other hand, Feynman’s view was that you don’t truly understand complex systems unless you can explain them in simple terms to a non-specialist.
 
Colin L said:
... Feynman’s view was that you don’t truly understand complex systems unless you can explain them in simple terms to a non-specialist.
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That's a technique I use. Even to the extent of trying to explain something to my own uneducated former self in a few simple paragraphs. I find it does expose flaws in my own understanding that I can then remedy.

And by writing something down and then stripping away the unnecessary complexity inevitable in a first draft, it exposes to me just what it was that my uneducated former self needed to grasp in the first place on the road to understanding. I think it's a skill that good teachers acquire to grasp what are the key "first steps" in understanding something to start someone moving along the road.
 
Colin L said:
Ian Jack has described the teaching of physical processes and systems taught up to A level as “lies to children”. They are given a superficial understanding but actually the way things actually work is can more gnarly, complicated and counter-intuitive than can be easily understood.
Click to expand...
Yes, all part of the process that is used to explain science at different levels.

On the other hand, Feynman’s view was that you don’t truly understand complex systems unless you can explain them in simple terms to a non-specialist.
Click to expand...
Feynman is a great person to watch and listen to. His simple explanations do make it easier to understand how complex systems work.
 
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