Across
- 2. the appearance of light blending when it moves from one medium to another
- 4. a wedge shaped piece of transparent glass that breaks up light into all the colors of the spectrum
- 7. short invisible light waves beyond violet on the spectrum
- 9. a dark purplish blue color
- 11. a photographic or digital image of the internal part of the body
- 12. a clear piece of curved glass of plastic that is used to make things look clearer larger or smaller
- 13. allowing light but not detailed shares to pass through
- 14. think or heavy
Down
- 1. a doctor who specializes in eyes
- 3. the distribution of all the colors that make up light
- 5. to make something look larger or sound louder
- 6. protection from danger
- 8. long light waves beyond red on the spectrum that can only be seen with special insruments
- 10. a tool or measuring device