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interferometry

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laser ring gyroscope

Overview page. Subjects: Astronomy and Astrophysics.

A spacecraft gyroscope that can detect the Doppler effect that is initiated in light beams when the gyro is rotated. It does this using interferometry, producing wave interference to...

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moiré pattern

Overview page. Subjects: Physics.

A pattern produced when two sets of line grids are slightly inclined to one another. This results in the appearance of dark bands. In optics the moiré fringe is the series of interference...

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Parameswaran Hariharan

Overview page. Subjects: Photography and Photographs.

(b. 1926),

Indian‐born scientist, who was successively director of photographic laboratories at Hindustan Films and senior professor at the Indian Institute of Science, Bangalore,...

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schlieren photography

Overview page. Subjects: Photography and Photographs — Physics.

A technique that enables density differences in a moving fluid to be photographed. In the turbulent flow of a fluid, for example, short-lived localized differences in density create...

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