Across
- 1. the ray of light which leaves the mirror and is represented by an arrow pointing away from mirror
- 5. the speed of light in a vacuum
- 7. is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
- 10. he had proposed a solution to the problem of observations made on the behaviour of light having characteristics of both wave and particle theory
- 12. the angle between the incident ray and the normal line
- 13. the ray of light approaching the mirror and it represented by an arrow approaching an optical element like mirrors
- 14. an imaginary line that can be drawn perpendicular to the surface of the mirror at the point of incidence where the ray strikes the mirror
- 15. he believed that light was made up of waves vibrating up and down perpendicular to the direction of the light travels
Down
- 2. 299,792.458 km/s is the
- 3. it is the bouncing of light
- 4. the angle between the reflected ray and the normal
- 6. on,1815 he supported Young's experiments with mathematical calculations
- 8. on 1803,he studied the interference of light waves by shining light through a screen with two slits equally separated
- 9. he is the scienctist who held the theory that light was made up of tiny particles
- 11. on 1900,he proposed the existence of a light quantum