1.
A specific amount of something
2.
As light, or a range of things
3.
The first step in the production of light
4.
The father of quantum mechanics
5.
Prefix meaning one billionth
6.
How fast something oscillates back and forth
7.
What light doesn't need to go places
8.
Radiation that can give electrons a kick
9.
EM waves good for communication
10.
EM waves that can shake water molecules
12.
Light between about 400 and 700 nanometers
13.
Black lights are in this EM range
14.
Broken bones? Time to see the dentist?
18.
Good vibes and light bulbs do this
20.
The distance from peak to peak
21.
The study of colors of light