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MichaelRMcCoy (November 30, 1999 at 12:00 am)
A magnet does not attract copper.
FeedMeSugar (November 30, 1999 at 12:00 am)
Thanks for this video. I was having a hard time understanding this law. I think I got it now. ((:
ianorg (November 30, 1999 at 12:00 am)
None of the coins were magnetic. If they were even slightly attracted to the magnets they would have simply stuck to them and not moved at all. An iron disk would have flown out of my fingers before I could even drop it.Lenz law is easy to demonstrate with todays strong rare earth magnets.
pcdsgh (November 30, 1999 at 12:00 am)
the reliability of this demonstration relies on a single thing: if a copper coin moves as fast/faster than an iron coin with the same surface, then this whole experiment is a fake. (each coin on a magnet)Copper is a better conductor than iron.What I think I saw is metal coins simply being attracted to the magnet, increasing the friction between them, thus decreasing the speed, not the actual lenz effect.This experiment should also be very difficult to measure without complex machinery.
FrozenMelvin (November 30, 1999 at 12:00 am)
Great... No sound...-_-""
Trapezoidal (November 30, 1999 at 12:00 am)
Very nice demonstration
gammaparticles (November 30, 1999 at 12:00 am)
It's the copper in the coin. Qtrs, dimes, and pennies all contain larger amounts of copper. You can see the copper color by turning the coin on it's edge.
SAMJE123456 (November 30, 1999 at 12:00 am)
At the end of all that can you build your own house.LOL no because your a lazy slob who plays with coins
FlaggerFighters (November 30, 1999 at 12:00 am)
I remember when I had a Penny that rolled under the couch, and I tried to get it with a magnet.Guess what happend.
RoadRunnerLaser (November 30, 1999 at 12:00 am)
Great demo. Thanks. |
