a wave produced by the acceleration of an electric charge and propagated by the periodic variation of intensities
the branch of physics that deals with sound and sound waves
the acceleration of a falling body in the earth's gravitational field, inversely proportional to the square of the distance from the body to the center of the earth
the elasticlike force existing in the surface of a liquid caused by asymmetries in the intermolecular forces between surface molecules
the direct effect that one kind of particle has on another in inducing the emission or absorption of one particle by another
the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts