Comments by "TheEvertw" (@TheEvertw) on "Veritasium" channel.

  1. No, this is wrong. It is not the kinetic energy in the electron that transmits energy. Electrical and Magnetic energy are different types of energy than kinetic & potential energy. There are no good analogues to compare the two. For instance, in the ball example (if you have a very large and heavy electron), the energy would be released upon the ground long before the ball would strike it. Instead, the ball would hang in the air, a very short distance from where it was released.
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  2. ​ @rs7349  The problem is that there is not real analogy between mechanical energy and electro-magnetic energy. The two are fundamentally different. In the past this was easier to comprehend than now, because of the discovery of electrons. As people think of these as tiny balls, all sorts of analogies present themselves, that all fall flat because a scaled-up electron would behave radically different then a ball of the same size. Both in its movement and its effect on its surroundings.
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  3. I have been wondering for 50 years how these machines worked. The part that had me stumped was how they managed to reliably capture the thread, because that is exactly the problem you described with mimicking human-made stitches. The thread needs to be reliably captured and then released again. I didn't realize that it would naturally loop when the needle is withdrawn a little bit, and that by passing very close to the needle that loop can be caught. Thanks for explaining this mystery!
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  4. AC's making a come back? He must refer to micro-electronic Analog Computers doing artificial intelligence, that would be a sensible application. But most people would not be able to distinguish these from their Digital counterparts. For one, their inputs would likely be from digital data.
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  5. 9:20 "Both the electric and magnetic field flip at the same time" No, they flip one-quarter cycle from each other.
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