PeTA 1 (Physics)

2. is by which light is spread out according to its color as it passes through an object.
5. the combination of two or more electromagnetic waveforms to form a wave in which the displacement is either reinforced or canceled.
7. a disturbance or oscillation that travels through space-time, accompanied by a transfer of energy.
10. curved pieces of glass or transparent materials that refracts light.
11. refers to a phenomena that occur when a wave encounters an obstacle or opening.
13. is the bending of light as it passes from one transparent substance into another.
15. are lenses that we use and may either use concave or convex lenses depending on the sight of the person.
17. vibrations of light waves occur in a single plane.
18. has a reflecting surface that is curved outward.
19. smooth, shiny surfaces that allows us to see an image or the reflection of their surface

1. uses concave lenses and is a two-eyed tool and instrument that can be used to observe distant objects with a wider field of view.
3. who stated the Law of Refraction
4. uses concave lenses and is a single-eyed tool and instrument that can be used to observe distant objects in a small area.
6. uses convex lenses and is an instrument that can be used that makes something appear larger than what they look like.
8. uses convex lenses and is an instrument that can be used to observe small objects that is invisible to the human eye.
9. has a reflecting surface that is curved inward.
12. an electromagnetic wave that can be detected by the human eye.
14. the term for farsightedness.
16. the term for nearsightedness.
20. an image produced by or as a if by a mirror.