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| What did the ancient greeks call smallest quantity of light |
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| what are bundles of energy called? |
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| small bundle of energy traveling through space at the speed of light is what? |
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| light photons and x-ray photons are both part of: |
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| Speed of light is equal to _____miles per sec. |
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| Photons have no mass, and therefore no identifiable form, but they do have electric and magnetic fields that are continuously moving in a sinusoidal fashion, what is this called? |
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| The rate of rise and fall of a sine wave is called: |
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| The distance from one crest to another is called: |
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