Across
- 5. A spectrum of light formed when sunlight strikes raindrops, refracts into them, reflects within them, and the refracts out of them
- 7. 300,000 kilometers/second
- 11. The bending of light as it passes through the boundary between two media
- 13. The emission of electrons by a surface when struck by electromagnetic radiation
- 14. Radiant energy visible to the human eye
- 16. Theory that light consists of waves traveling out from light sources
- 17. Light Amplification by Stimulated Emission of Radiation
- 18. A property of the light that reaches our eyes and is determined by its wavelength or frequency
- 20. Theory that energy is radiated or absorbed in discrete units
Down
- 1. Light waves restricted to a single plane that is perpendicular to the direction of wave motion
- 2. The spreading of white light into the full spectrum
- 3. The distance that light travels in one year
- 4. Light appears to act as a wave or a particle depending on the type of experiment
- 6. The number of complete vibrations or cycles per second of a wave
- 8. Theory that light consists of a stream of particles
- 9. The colors resulting from the dispersion of white light through a prism
- 10. A property of a wave that describes its ability to bend around obstacles in its path
- 12. The distance between two successive corresponding points on a wave
- 15. The turning back of all or part of a beam of light at a surface
- 19. Packets of energy that carry light or electromagnetic radiation