TOPIC:

The glass selections available are neophane glass (left), holmium oxide glass (left center), and dydimium glass (right center). The spectrum of white light, without any absorbing glass, is shown at the right.





ID Code: N2-32
Purpose: Demonstrate absorption spectrum of glass doped with various chemicals.
Description: A bright point source with condenser lens and iris is focused by a 10 cm focal length cylindrical convex lens onto a slit, which is in turn focused onto a distant screen by a 20 cm focal length spherical convex lens. A white light spectrum is obtained by inserting an equilateral prism just after the spherical lens. A sample of glass doped with a chemical is placed in the beam just before the slit. The system now shows the absorption spectrum of the glass.
Availability: Available