[amsat-bb] Re: Earths Magnetic Field strength
vk3jed at gmail.com
Wed Feb 21 12:12:15 PST 2007
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
More information about the AMSAT-BB