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L6-21: OPTICAL BOARD - DIVERGING SPHERICAL LENS 9 years 11 months ago #916

  • zzfixk21
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ID Code: L6-21
Purpose: Determine the focal point of a concave lens.
Description: Parallel rays incident on a diverging plano-concave spherical lens appear to emanate from the focal point of the lens. Two diverging lenses can be placed together to increase the divergence and decrease the focal length. A slit baffle with concave and convex lenses are used to create the set of parallel rays, which can be varied in number and in spacing.
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