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Fresnel Bi-Prism
(LT-2074) |
To determine wave lengths of light by observing fringes
produced by two interference light beams splited by Biprism.
The bi-prism 40 x 30 mm, with angle of 178° at the centre
line of the face. Mounted in a frame with hinged joint and
has a micrometer screw for fine adjustment. |
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