Submitted by admin on Fri, 04/18/2014 - 15:18
definition:
A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects
sentence:
Relativity would arrive, not from concerns over the flaws in Newton's mechanics, but rather from contemplating the forces of electricity and magnetism as well as the mysteries of light.
difficulty:
medium
toefl frequency:
2