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staedtler staedtler
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7 years ago
What is different about light, compared to other waves such as sound waves or waves on water?

(a)   If we measure the speed of light, we always get the same value, regardless of how we or the light source are moving.
(b)   If light passes through two closely-spaced openings, the waves leaving the openings spread out and interfere with each other.
(c)   If a source of light is moving relative to us, the light waves emitted in the direction of motion of the source move faster than if the source were at rest, increasing the observed wavelength of the waves.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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7 years ago
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staedtler Author
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6 years ago
Grinning Face Exactly what I needed
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