Across
- 1. a dark shape that appears on a surface when someone or something moves between the surface and a source of light
- 5. clear or easy to see through
- 6. a transparent crystal used to separate light
- 10. able to be seen
- 12. curving or arched inward
- 14. property of light seen as different hues
- 15. allowing light but not detail to pass through
- 17. to put forth or send out
- 18. a device for creating a narrow beam of light
Down
- 1. band of colored lights
- 2. type of energy that makes things visible
- 3. to take in without motion
- 4. transparent material for focusing light
- 7. red skin irritation from solar radiation
- 8. the tone or color of the skin
- 9. to move in one direction, hit a surface, and then move quickly in a different and usually opposite direction
- 11. to make light change direction when it goes through at an angle
- 13. unable to see through
- 14. curving or arched outward
- 16. a polished surface which reflects an image