Across
- 3. a process that occurs when a material absorbs light at one wavelength and then emits light at a longer wavelength; a process in which phosphorescent material converts radiation into visible light
- 7. packets of electromagnetic energy; also called a "packet" of light
- 9. a description of an object that is hot enough to glow
- 10. a false or distorted image
- 12. the transfer of electromagnetic waves traveling through matter or across space
- 15. a solid material that can emit light by fluorescence
- 16. the process in which white light separates into colors
- 17. the frequency of the wave is varied and the amplitude remains the same
- 18. a process by which light is redirected as it passes through a medium
- 19. a description of an object that gives off its own light
- 20. a description of a material that that allows most of the light that strikes it to pass through
- 22. the emission of electrons from a metal caused by light striking the metal
- 24. the rate at which a wave's energy flows through a given unit of area
Down
- 1. the amplitude of the wave is varied and the frequency remains the same
- 2. transverse waves consisting of electric fields and changing magnetic fields
- 4. the full range of frequencies of electromagnetic radiation
- 5. light with waves that vibrate only in one plane
- 6. light in which waves have the same wavelength and the crests and troughs are lined up
- 8. a description of a material that either absorbs or reflects all of the light that strikes it so that nothing can be seen trough it
- 11. a copy of an object formed by reflected or refracted light
- 13. color-coded pictures that show variations in temperature
- 14. a device that generates a beam of coherent light (stands for light amplification by simulated emission of radiation)
- 21. three colors that can be combined in varying intensities to create millions of colors (for light= red, blue, green)
- 23. a description of a material of a material that scatters light that passes through it