N-slit interferometer
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The N-slit interferometer is an extension of the double-slit interferometer also known as Young's double-slit interferometer. One of the first known uses of N-slit arrays in optics was illustrated by
The diffraction pattern over the interferogram shown above, corresponding to N = 3 slits, was generated using a single spider silk fiber with a diameter of about 25 μm.
Clear-air turbulence
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In meteorology, clear-air turbulence is the turbulent movement of air masses in the absence of any visual clues such as clouds, and is caused when bodies of air moving at widely different speeds meet.
N-slit interferometer
…the spider web fiber is perpendicular to the propagation plane. N-slit interferometers, using large intra interferometric distances, are detectors of clear air turbulence. The distortions induced by clear air turbulence upon the interferometric signal are different, in both character and magnitude, from the catastrophic…
Cirrus clouds often associated with clear-air turbulence