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11 Cards in this Set
- Front
- Back
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Prism |
made up of a transparent material, like glass |
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Perceive |
to become aware of |
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Illuminated |
light up |
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Scattering |
a change in the direction of motion due to a collision with another particle |
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Point source |
a source of energy |
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Extended source |
a source whose angular size exceeds to observe it |
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Penumbra |
a partial shadow between regions of full shadow and full illumination |
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Umbra |
the fully shaded inner region of a shadow cast by an opaque object |
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Zero shadow day |
a day on which the Sun does not cast a shadow of an object at noon |
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Superstition |
any belief based upon one's trust in luck |
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relevant |
closely connected |
