Across
- 2. the bouncing off of light
- 3. the spreading of white light into colours
- 5. objects that are sources of light
- 7. line that is perpendicular to the surface of an object
- 9. angle between the normal and the incident ray
- 10. smaller lines of light
- 11. a ray that bounces off a surface
- 14. angle between the normal and the reflected ray
- 16. the appearance of of an object in a smooth,shiny surface produced by light
Down
- 1. English physicist that shone light through narrow slits to understand the behavour of light
- 4. the bending of light as it passes from one medium to another
- 6. when an opaque substance blocks light
- 7. objects that are not sources of light but only reflects light
- 8. an instrument that uses two plane mirrors. Often used in submarines
- 12. radiation, light is a wave that travels through vacuum
- 13. light that strikes a surface
- 15. a form of energy