Across
- 3. Wave This energy travels in a wave that is partly electric and partly magnetic.
- 5. massless bundles of concentrated electromagnetic energy
- 6. Materials that absorb light without re-emission and thus allow no light through.
- 7. A total shadow.
- 8. Light Electromagnetic waves of frequencies lower than the red of visible light.
Down
- 1. Materials that transmit light.
- 2. Light Electromagnetic waves of frequencies higher than those of violet.
- 4. Year The distance light travels in one year.
- 5. A partial shadow
- 9. A thin beam of light.