elecromagnetic waves

7. A measure of how much a material reduces the speed of light passing through it.
8. Electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves.
12. Electromagnetic radiation that is visible to the human eye.
13. The release of energy as electromagnetic waves or subatomic particles.
14. A particle representing a quantum of light or other electromagnetic radiation.
16. The process by which electromagnetic waves bounce off a surface.
17. An optical illusion caused by atmospheric conditions where light is bent or reflected.
18. Technology using thin strands of glass or plastic to transmit signals as light pulses.
20. The range of frequencies of electromagnetic radiation.

1. The separation of electromagnetic waves into two perpendicular planes of polarization.
2. The number of complete wavelengths that pass a point in a given time.
3. The interaction between electric currents and magnetic fields.
4. The complete reflection of light back into a medium when it hits the boundary at a certain angle.
5. A type of mirage where objects appear inverted and floating above the horizon due to atmospheric conditions.
6. The distance between successive crests of a wave.
9. The bending of waves as they pass from one medium to another.
10. The process of transferring energy through space or a medium via electromagnetic waves.
11. The process of waves being taken in or swallowed up.
15. A repeated back-and-forth movement of particles, electric fields, or magnetic fields.
19. The outer layer of a fiber optic cable that reflects light back into the core.