RADIATIONÉ
is an wave that
moves through space at a constant speed: 300,000,000 m/s
This wave is
analogous to the ripples on a pond that propagate when the
pondÕs surface is disturbed by a rock. The difference is that instead of waves
of water propagating through
space, radiation involves waves of an
electromagnetic field.
Radiation comes in many forms...
¥radio waves ¥microwaves
¥heat from a fire
¥light
¥Ultraviolet rays ¥X-rays ¥Gamma
rays