Light & Lasers

5. a quantum of electromagnetic radiation, the smallest unit of light
8. Casting back a light or heat, mirroring, giving back or showing an image
9. electromagnetic radiation with longer wavelength of those than visible light
12. two exterior angles on opposite sides of a transversal which lie on different parallel lines
13. a device that produces a nearly parallel and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase
14. a lens having at least one surface that curves outward
15. the number of cycles or completed alteration per unit time of a wave or oscillation

1. the range of wavelengths or frequencies over witch electromagnetic radiation extends
2. the change of direction of light, sound, or heat
3. a lens having at least one surface that curves inward
4. a line that intersects a system of lines
6. electromagnetic radiation with wavelengths shorter than those of visible light
7. increase the apparent size of, the act of magnifying
10. the distance between two successive points in a wave
11. the angles that occupy the same relative position at each intersection where a straight-line crosses two others