Various Consequences

I just had a pretty neat problem on my Electrodynamics ( course text ) mid-term. The problem is to solve for the electric field for two cha...

I just discovered a great new plug-in (in time for mid-terms) for OpenOffice.org Impress called Open Cards . It is uses the titles of the ...

What if the Earth's magnetic field were caused by a current loop in the mantle? This can be a decent approximation because the Earth...