The Spirit of Light
Across
- 3. the return of light from a surface
- 7. allowing all light to pass through
Down
- 1. Allowing some light to pass through
- 2. change in direction of light when it passes from one medium to another obliquely
- 4. The range of wavelengths over which radiation extends
- 5. allowing no light to pass through
- 6. The natural agent that stimulates sight and makes things visible