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1
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a lens that is thinner at the center than at the outside
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2
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when light rays actually meet
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3
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an image of a distant object caused by refraction of light
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4
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a flat sheet of glass that has a smooth, silver colored coating on one side
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5
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a copy of the object formed by reflected or refracted rays of light
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6
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electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves
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7
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electromagnetic waves with wavelengths just shorter than those of ultraviolet waves
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8
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the energy that electromagnetic waves transfer
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9
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the distance between the crest of one wave and the crest of the next wave
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12
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a curved piece of glass or other transparent material that refracts light
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14
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electromagnetic waves with the shortest wavelengths
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15
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the number of waves that pass a given point in a certain amount of time
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22
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an imaginary line that divides a mirror in half
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25
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a lens that is thicker at the middle than at the outsides
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26
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electromagnetic waves with the longest wavelengths and the lowest frequencies
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