What is polychromatic light?

 

Polychromatic light is light (visible and invisible) that consists of many different wavelengths. For example, the white light from a halogen light source is polychromatic and contains all wavelengths between approx. 360 and 2500 nm. The light from white light LEDs and laser-pumped plasma light sources is also polychromatic. Monochromatic light, i.e. light with only one wavelength, can be isolated from polychromatic light in a monochromator.

What is the difference between polychromatic and monochromatic light?

Polychromatic light consists of many wavelengths, whereas monochromatic light consists theoretically of a single wavelength.

 

What are examples of polychromatic light sources?

Halogen light sources, white light LEDs and laser-pumped plasma light sources are examples of polychromatic light sources.

How can monochromatic light be made from polychromatic light?

In a monochromator, monochromatic light can be isolated from polychromatic light.