The demonstration of the nail falling off the iron keeper at the 'neutral
line' can be done using an ordinary large, and preferably weak, horseshoe
magnet. I constructed and energised my own horseshoe magnets for further
experiments as I experienced difficulty with the shape and power of
off-the-shelf magnets. Also the thickness of the keeper needs to be matched
to the magnet for best results. I constructed my keepers out of transformer
core lamination cut to the appropriate size and shape. All tests strongly
indicate the use of large, weak magnets - certainly in the early stages of
understanding the system relationships.
Regards, Bill.
At 01:19 6/08/98 -0400, Edward Kauffmann wrote:
>Hi Bill, Don, et al,
>
>Bill, I'd love to hear what parts you used in duplicating Gary's first two
>experiments. Are the magnets, iron, etc. stuff that you custom made or can
>you give part numbers or simple instructions on modifications to existing
>parts to get them to work?
>
>Thanks,
>
>Ed