Malt 379 Posted March 10, 2014 Report Share Posted March 10, 2014 Bet that explains alot of magic tricks!! I always thought copper was non-ferrous.... It is. The magnetic field generates an electrical field in the copper as it passes though it and its these two fields acting on each other that allows the magnet to fall so slowly. You never took one of those little silver motors from a toy apart as a kid? They've got copper and magnets in them.. Quote Link to post Share on other sites
Born Hunter 17,780 Posted March 10, 2014 Report Share Posted March 10, 2014 (edited) a magnet falling slowly through a fook off great thick copper pipe Inducing current flow in the pipe? I'd say so, same sort of thing that's in the inside of an electric motor or a dynamo. In a motor/dynamo you usually have wound copper coils inside magnets, this has the magnet on the inside the copper though.. Aparently the 'trick' is a well known one....... So the magnet has to roughly fit the bore of the copper pipe (that's what confused me initially). The pipe isn't magnetic but is conductive (that's critical!). As the magnet falls it induces current flow radially which induces its own magnetic field which opposes that of the magnet itself resulting in a small force working against gravity reducing the effective value of the acceleration due to gravity. http://regentsprep.org/Regents/physics/phys08/clenslaw/ Edited March 10, 2014 by Born Hunter Quote Link to post Share on other sites
clipo 871 Posted March 10, 2014 Report Share Posted March 10, 2014 Bet that explains alot of magic tricks!! I always thought copper was non-ferrous.... It is. The magnetic field generates an electrical field in the copper as it passes though it and its these two fields acting on each other that allows the magnet to fall so slowly. You never took one of those little silver motors from a toy apart as a kid? They've got copper and magnets in them.. still stripping things for there motors now to weigh in 1 Quote Link to post Share on other sites
jonesy 111 Posted March 10, 2014 Report Share Posted March 10, 2014 Never mind all this stuff about magnets,Where the fook do you get copper pipe like that? Quote Link to post Share on other sites
Outlaw Pete 2,224 Posted March 10, 2014 Report Share Posted March 10, 2014 Feck knows,,,,,seen something similar on a documentary ,,,,,lol,,, where's born hunter when you need him? modelling for grattons You c***! I nearly choked to death on my f**king dinner there!!! Quote Link to post Share on other sites
thebiggerdog 160 Posted March 11, 2014 Report Share Posted March 11, 2014 what would happen to the magnet, if the copper pipe was connected to a power source? Quote Link to post Share on other sites
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