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What do the nanometers in light waves mean if light has no volume?

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  • What do the nanometers in light waves mean if light has no volume?


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Answer #1 | 28/12 2013 22:05
Light travels at 186000 miles per second. This means that at any one frequency it will have covered a certain distance in the time taken for it to complete one cycle, this distance is its wavelength. The aether doesn't exist, as Jared pointed out its existence was disproved a long time ago. Electromagnetic waves don't need a medium to carry them like air carries sound waves.
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Answer #2 | 29/12 2013 10:02
Nanometer is not a unit of volume, it's a unit of length. In this case, wavelength. It's a distance along the direction of propagation of the light. It's irrelevant (not to mention inaccurate) to talk about displacement, because the "displacement" of light is transverse: perpendicular to the direction of movement. That's irrelevant to the wavelength. The wavelength is the distance between one point of maximum electric field and the next point of maximum electric field in the same direction. Additional: Yes, light is a fluctuation in the electric field. However the extent of the difference between extremes of the electric field is the amplitude, not the wavelength. The wavelength is the distance from the position where the maximum occurs to the position where the next maximum occurs.
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