Term
| What is the shortest wavelength of color? The longest? |
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Definition
| violet is shortest. red is longeest |
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Term
| What equation relates the speed of light to frequency and wavelength |
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Definition
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Term
| What is the visible spectrum for humans? |
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Definition
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Term
| convex mirrors vs concave mirrors |
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Definition
- diverging mirrors, the center of curvature and the radius of curvature are behind the mirror
- converging mirrors, the center of curvature and the radius of curvature are in front of the mirror
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Term
| How is focal length related to the radius of curvature for spherical mirrors? |
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Definition
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Term
| what is the equation for magnification? |
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Definition
m = -i/o
m is magnification, it is dimensionless
i is the distance between the mirror/lense and the image
o is the distance between the object and the mirror/lense
A negative magnification signifies an inverted image
A positive value signifies an upright image |
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Term
| What equation relates the distances between image, object, mirror/lense and focal point? |
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Definition
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Term
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Definition
| If an image is in front of the mirror it will have a positive distance and is real. If an image is behind the mirror it will have a negative distance and is virtual. The convention is the opposite in lenses. The real side is where the light rays are reflected or refracted and where the image should be |
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Term
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Definition
states that there is an inverse relationship between the index of refraction and the sine of the angle of refraction
[image] |
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Term
| How can you determine the speed of light when it isn't in a vacuum? |
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Definition
n = c/v
n is the index of refraction, dimensionless
c is the speed of light in a vacuum, m/s
v is the speed of light in the medium, m/s |
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Term
| What is the critical angle and how can it be determined? |
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Definition
the critical angle is when the refracted angle equals 90 degrees, when the angle of incidence is greater than this angle a phenomenon in which all the light incident on a boundary is reflected back into the original material, this is called total internal reflection
θc = sin-1(n2/n1)
θc is the critical angle
n1 is the medium the light ray starts in
n2 is the medium the light ray is going into |
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Term
| What is the equation to be used when the thickness of a lens can't be ignored? |
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Definition
[image]
n is the index of refraction of the lens material
r1 is the radius of curvature of the first lens surface
r2 is the radius of curvature of the second lens surface |
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Term
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Definition
P = 1/f
P is in diopters
P is positive for a converging lens and negative for a diverging lens |
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Term
| How to determine focal length, power and magnification in multiple lens systems |
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Definition
- 1/f = 1/f1 + 1/f2 + 1/f3 + ...
- P = P1 + P2 + P3 + ...
- m = m1 + m2 + m3 +...
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Term
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Definition
| all of the light rays have electric fields with parallel orientation in this kind of light |
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Term
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Definition
| the bending and spreading out of light waves as they pass through a narrow slit |
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