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wave front

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wave front

Imaginary surface that represents corresponding points of waves vibrating in unison. As identical waves from the same source travel through a homogeneous medium, corresponding crests and troughs are in phase at any instant; that is, they have completed the same fraction of their periodic motion. Any surface drawn through all points of the same phase constitutes a wave front.



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While traveling throughout Asia, I took advantage of the low cost of lasik wave front eye correction surgery in September 2004.
A green arc of catalyst a millimeter or two wide shows the researchers, at any given moment, where the leading edge of the chemical wave front is.
The new lenses not only meet tough new environmental regulations, but achieve very low chromatic dispersion to collimate or focus light in a broad wavelength range of 1450-1650 nanometers with less than diffraction limited wave front error.
 
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