PURPOSE: Demonstrate continuous spectrum.
DESCRIPTION: The bright point source is used to provide a continuous white light spectrum. Light from the point source is focused by a condenser lens with iris and a 10 cm focal length cylindrical lens onto a slit. A 20 cm focal length convex lens then images the slit onto the screen through an equilateral prism.
REFERENCES: (PIRA 5N30.10)Demonstration N1-02: PRISMATIC SPECTRUM OF WHITE LIGHT - INCANDESCENT, is a simpler version of this demonstration which remains already set up.
EQUIPMENT: Bright point source with condenser lens and iris, 10cm focal length cylindrical convex lens, slit, 20cm spherical convex lens, and flint glass prism.
SETUP TIME: 5 min.
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