Dropping a magnet through a copper pipe

[Brogan]

Bear in mind that copper isn't magnetic and there is no magnetic attraction between the magnet or the pipe.

!

 

[jez101]

I was confused...

http://regentsprep.org/Regents/physics/phys08/clenslaw/default.htm

I am now enlightened

 

[Josh]

I don't like this phrase, but my mind is blown

 

[Greenlantern101]

magnetic liquid.
You can even make your own from laser cartridge toner and olive oil.

 

[Fenderman]

Bear in mind that copper isn't magnetic and there is no magnetic attraction between the magnet or the pipe.

I was confused...

http://regentsprep.org/Regents/physics/phys08/clenslaw/default.htm

I am now enlightened

... hence the use of copper wire coiled around magnets in such things as generators, magnetos, dynamos, microphones, loudspeakers and numerous other applications that we take for granted in modern life! Nice find guys

 

[Brogan]

Yes, my engineering training covered that but I had never seen this particular phenomenon before. Surprising really.

It's also the kind of thing which kids would love to experiment with in Physics at school, possibly leading them to find out more.