Across
- 4. Refraction is the bending of light as it passes from one substance to another.
- 5. Clear,lucid.
- 6. A range of values of a quantity or set of related quantities
- 7. of reflection when light falls upon a plane surface it is so reflected that the angle of reflection is equal to the angle of incidence and that the incident ray, reflected ray, and normal ray all lie in the plane of incidence
- 8. spectrum the range of wavelengths or frequencies over which electromagnetic radiation extends.
- 12. The distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.
- 13. Capable of, suitable for, or exhibiting luminescence.
- 14. Curved like the inner surface of a sphere.
- 16. of incidence The angle formed by a ray incident on a surface and a perpendicular to the surface at the point of incidence.
- 17. Impenetrable by light; neither transparent nor translucent.
Down
- 1. The property or condition of occurring at frequent intervals.
- 2. Capable of transmitting light so that objects or images can be seen as if there were no intervening material. See Synonyms at clear.
- 3. point The focal point of a lens or mirror is the point in space where parallel light rays meet after passing through the lens or bouncing off the mirror
- 6. theory Producing or involving subtraction.
- 9. theory A substance added in small amounts to something else to improve, strengthen, or otherwise alter it.
- 10. conforming to the standard or the common type; usual; not abnormal; regular; natural.
- 11. Emitting visible light as a result of being heated.
- 15. Having a surface or boundary that curves or bulges outward, as the exterior of a sphere