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Twyman-Green Interferometers
  • Twyman-Green interferometer A testing device that provides a contour map of the emergent wavefront for the observer in terms of the given wavelength of the light.  
  • interferometer An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a length in terms of the length of a wave of light by using interference phenomena based on the wave characteristics of light....
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