PeTA 1 (Physics)

4. has a reflecting surface that is curved inward.
6. the term for farsightedness.
9. an image produced by or as a if by a mirror.
10. a disturbance or oscillation that travels through space-time, accompanied by a transfer of energy.
11. 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.
12. is the bending of light as it passes from one transparent substance into another.
16. the combination of two or more electromagnetic waveforms to form a wave in which the displacement is either reinforced or canceled.
18. uses convex lenses and is an instrument that can be used that makes something appear larger than what they look like.
20. smooth, shiny surfaces that allows us to see an image or the reflection of their surface
21. uses concave lenses and is a single-eyed tool and instrument that can be used to observe distant objects in a small area.

1. to the ration of the refractive index of the materials at interface.
2. vibrations of light waves occur in a single plane.
3. an electromagnetic wave that can be detected by the human eye.
5. curved pieces of glass or transparent materials that refracts light.
7. refers to a phenomena that occur when a wave encounters an obstacle or opening.
8. the term for nearsightedness.
13. is by which light is spread out according to its color as it passes through an object.
14. are lenses that we use and may either use concave or convex lenses depending on the sight of the person.
15. the person who stated that the ratio of the angles of incidence and transmission is
17. uses convex lenses and is an instrument that can be used to observe small objects that is invisible to the human eye.
19. has a reflecting surface that is curved outward.