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Light
Beginning of Essay
is what we see. It can be thought of either as a particle, (the photon), or as a wave. The photon we can easily think of as a small dot travelling through space at the speed of . Each photon has a particular colour or energy. But how do we think of as a wave? Fo .... Middle of Essay
.... of a particular colour (or energy).
¨ travels at a speed of 2.99792458x10^{8} ms^{-1}
¨ When passing though matter, is slowed down by brief interactions, and so appears to travel more slowly.
¨ This "slowing down" is accounted for by the index of refraction of the matter.
's properties can at first seem confusing and inconsistent because of
the unique nature of light: light has the properties of both a wave and a
particle. In some situations, light's behavior is more easily explained by
thinking of light as a particle. In other situations, its behavior can only be
explained if light is thought of as a wave. This duality of light between a
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Words: 815 - Pages: 3
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