Rami Arieli: "The
Laser Adventure" Chapter 1.2.1 page 1
1.2.1 Monochromaticity
Monochromaticity means "One color".
To understand this term, examine "white light"
which is the color interpreted in the mind when we see all colors together.
When "white light" is transmitted through a prism,
it is divided into the different colors which are in it, as seen in figure
1.6.
Figure 1.6: White light passing through a prism
To play with an interactive applet,
which helps understand how light is refracted inside a prism, and the meaning
of dispersion, click on: Prism
Applet.