RADIATION…
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 pond’s 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
