When a laser beam is incident on a Ronchi ruling, a single diffraction pattern is observed. As the ruling is rotated, the diffraction pattern rotates with the ruling. If the second Ronchi ruling, ...
Ann Arbor Optical Co. manufactures the Model C Ronchi-type Optical Tester, excellent for viewing optical distortion and focal length variation in lenses, mirrors and optical windows. Also, Ronchi ...
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