1.
The part of the electromagnetic spectrum visible to the human eye with wavelengths from red to violet.
2.
Energy transmitted through photons or particles, especially those that can cause ionization.
3.
The smallest possible packet of energy.
4.
The spreading out of light waves when the spectrum encounters a grating, causing changing directions.
5.
The rate of vibration measured in Herz; one Herz is one vibration per second.
6.
The rate at which an object or wave travels; the basic unit is meters per second.
7.
The distance between successive peaks in a wave.
8.
The part of the electromagnetic spectrum the human eye can view from violet at 380 nanometers up to red at 700 nanometers.
9.
High-frequency, high-energy photons generated by the nucleus during radioactive decay.
10.
Between ultra-violet and gamma rays, x-rays are energetic photons that originate in the electron cloud of an atom.
11.
An electromagnetic wave between 1 millimeter and 30,000 meters used for long distance communication.
12.
An electromagnetic wave between 0.001 and 0.3 meters wavelength used fornradar, communications and heating.
