Electromagnetism A theory that deals with the physical relations between electricity and magnetism, and which shows visible light to be part of a spectrum of electromagnetic radiation encompassing radio waves, microwaves, and

of gravitation and electromagnetism . He complained that the new quantum theory was fundamentally incomplete without this unification. It remains one of the physical sciences greatest unsolved puzzles. Related Topics:

interactions: gravitation, electromagnetism , and the weak and strong nuclear interactions. If the relative strengths of these forces were different, the resultant universe would also be different. For example, increasing the strong

The fly in the ointment was electromagnetism . An electric charge moving in a circle emits energy. If electrons are classical particles emitting energy in this way, they would very rapidly dissipate all their energy and fall into the nucleus .

using classical physics and electromagnetism . The light from these objects is a mixture of different frequencies (colours). Observations reveal that such objects have a distinctive spectrum (pattern of energy distribution at different

is the laws of gravity and electromagnetism . All three of the gravitational, electric, and magnetic forces obey "inverse square laws" - that is the force of attraction or repulsion between two such bodies, falls off by the reciprocal

particle physics , in which electromagnetism and the weak nuclear force were unified (e.g., the electroweak force ), and these unified with the strong nuclear force (fundamental particle physics) (1940's - present). Quantum corrections to the