21 Feb
2007
21 Feb
'07
9:12 p.m.
At 03:00 AM 2/22/2007, lu7abf wrote:
If the separation between poles of a small magnet defines strength of force, then a small separation as in a magnetic compass needle only 1 inch long placed at equator, over 6000 miles from poles will not move. Instead it does.
But that is rotation, which is equivalent to magnetotorquing, and we all agree this works well. However, your compass for a rare earth speaker magnet doesn't actually move across the table top in Earth's magnetic field, does it? THAT would be equivalent to trying to move the satellite into a new orbit.
73 de VK3JED http://vkradio.com