Fine Resolution Of Spectrum Using Two Prisms

Purpose

Increase the dispersion in a white light spectrum by adding a second prism.

Equipment

Bright point source with condenser lens and iris, 10cm focal length cylindrical convex lens, slit, 20cm spherical convex lens, and flint glass prism, with second identical prism.

Setup Time

5 min.

Images

n1-23

Description

Use the prismatic spectrum setup of demonstration N1-01: PRISMATIC SPECTRUM OF WHITE LIGHT - POINT SOURCE. A second identical prism is inserted into the beam in the same sense as the first prism, so that the dispersion is increased .

References

(PIRA unknown.)