Interesting, Odd or Funny Pics.

Quote:

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Originally Posted by p38arover

I remember back in the mid-Sixties at the DCA Radio Training School, we would (try to) throw 3"-4" discs of aluminium sheet through the horns of a magnetron (radar valve) magnet.

The magnet looked like this:

https://www.aulro.com/afvb/images/im...2014/05/84.jpg

When we got it right, the discs would be accelerated and fly out the other side. All due to eddy currents being induced in the metal by the magnetic field.

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I believe that is the principle they use to separate aluminium cans out of the recycle garbage.

Quote:

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Originally Posted by crash

I believe that is the principle they use to separate aluminium cans out of the recycle garbage.

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Do they use it here? I saw it was used in the USA. If it was used here, I'd expect less concern about putting small aluminium bits. e.g., screw caps in the recycling

https://www.aulro.com/afvb/images/im...2014/05/83.jpg

https://www.aulro.com/afvb/images/im...2014/05/60.jpg

https://www.aulro.com/afvb/images/im...2014/05/82.jpg

https://www.aulro.com/afvb/images/im...2014/05/81.jpg

https://www.aulro.com/afvb/images/im...2014/05/80.jpg

https://www.aulro.com/afvb/images/im...2014/05/79.jpg

Quote:

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Originally Posted by p38arover

Do they use it here? I saw it was used in the USA. If it was used here, I'd expect less concern about putting small aluminium bits. e.g., screw caps in the recycling

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They do in at least some - have been in a large recycling facility in Melbourne that has an eddy current separator for aluminium.

This is a nice vid off what they call 'a levitating BBQ' - http://youtu.be/txmKr69jGBk

Also gives a good description of what's going on for the non electrical peoples out there.

https://www.aulro.com/afvb/images/im...2014/05/62.jpg

https://www.aulro.com/afvb/images/im...2014/05/63.jpg

https://www.aulro.com/afvb/images/im...2014/05/64.jpg

https://www.aulro.com/afvb/images/im...2014/05/65.jpg

https://www.aulro.com/afvb/images/im...2014/05/66.jpg

https://www.aulro.com/afvb/images/im...2014/05/67.jpg https://www.aulro.com/afvb/images/im...2014/05/68.jpg

https://www.aulro.com/afvb/images/im...2014/05/69.jpg

https://www.aulro.com/afvb/images/im...2014/05/70.jpg

https://www.aulro.com/afvb/images/im...2014/05/71.jpg

https://www.aulro.com/afvb/images/im...2014/05/72.jpg