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Physics 30 Unit 3
| Term | Definition |
|---|---|
| Transparent | light passes through freely |
| Translucent | light passes through and scatters (some absorbed/reflected) |
| Opaque | no light passes through, all absorbed/reflected |
| Normal | line drawn at perpendicular right angle to a solid barrier |
| Incident Ray | incoming light ray |
| Reflected Ray | light ray that bounces off |
| Angle of Incidence | angle between incident ray and the normal (label: i) |
| Angle of Reflection | angle between reflected ray and the normal (label: r) |
| Law of Reflection | angle of reflection equals angle of incidence |
| Refraction | bending of a wave when passing from one medium to another |
| Light passing from air to water bends ______ the normal | toward |
| Light passing from water to air bends ______ the normal | away from |
| Angle of Refraction | angle between refracted ray and the normal (label: R) |
| Light Refracted in Air | mirage |
| Converging Lens | lens which makes light come together to a single point |
| Diverging Lens | lens which spreads light apart |
| Snell's Law | n1sinθ1=n2sinθ2 |
| Real Image | light rays focusing on an image |
| Images produced by plane mirrors are always _____ and _____ | virtual, upright |
| Focal Length | f=R/2 |
| Real Images are always _____ | upside down |
| Virtual Images are always _____ | upright |