Lenz’s law & why do magnets fall more slowly through a copper tube?
When you move a magnet past a metal plate or through a copper tube you generate a current.
The current it’s self generates magnetic fields which oppose the magnetic field generated by the magnet impeding it’s movement
The key is in explaining that the law runs both ways; current generates magnetic fields, and magnetic fields generate current.
Read more:
http://regentsprep.org/Regents/physics/phys08/clenslaw/
#lenzlaw #physics #experiments
Fascinating stuff. Another good demonstration of the effect: Magnet Brakes its own fall
ReplyDeleteThat was great, thanks Marc McNaughton !
ReplyDeletepretty cool stuff!! i could see myself doing that for hours just to watch the magnet fall slowly
ReplyDeleteI think, It is amazing effect when you try do it faster, with bigger velocity. For example - pull it down (jerk it or drop a higher initial velocity etc.) or try quickly remove alumnium plate which is situated between magnetic poles.
ReplyDeleteGreetings :-))