Lights and Lasers

2. a concave lens is any lens that has an inward curve in the middle. In other words, the edges of the lens are thicker than the middle
3. the action or process of magnifying something or being magnified, especially visually
6. the range of wavelengths or frequencies over which electromagnetic radiation extends
8. intersecting a system of lines
9. the throwing back by a body or surface of light, heat, or sound without absorbing it
10. a particle representing a quantum of light or other electromagnetic radiation, photons carry energy proportional to the radiation frequency but has zero rest mass
13. electromagnetic radiation with wavelengths shorter than visible light
14. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density

1. the angles that occupy the same relative position at each intersection where a straight line crosses two others
4. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
5. a convex lens bends light rays inward, which results in the object being perceived as larger or closer
7. exterior angles on opposite sides of a transversal which lie on different parallel lines
11. the rate at which a vibration occurs that constitutes a wave, either in a material, or in an electromagnetic field
12. a device that generates an intense beam of coherent monochromatic light by stimulated emission of photons from excited atoms or molecules