Unit 6 Variables

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Physics

Geometric Optics

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15 Terms

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F

Frequency: cycles per one second (Hz or s-1)

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位

wavelength (m)

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n

index of refraction: ratio of lightspeeds; always >1 (index of air is 1.00)

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V

average wave speed (m/s)

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c

speed of light in a vacuum (m/s) ( 3.00 x 10^8 m/s)

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胃c

critical angle: 胃2 is 90* (*)

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So

distance from object to mirror/lens (m)

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f

focal length (m)

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R

radius of curvvature: double the focal length (m)

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Si

distance from mirror/lens to image (m)

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M

magnification

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Optics: value is positive

  • focal length of concave mirror

  • focal length of converging lens

  • objects/real images

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Optics: value is negative

  • focal length of convex mirror

  • focal length if diverging lens

  • virtual images

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hi

height of image (m)

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ho

height of object (m)