Color

Definition

Color is the characteristic of light determined by its wavelength, which can be perceived by human eyes and measured using scientific instruments. In microbiology, color helps in identifying and differentiating microorganisms under a microscope.

5 Must Know Facts For Your Next Test

1. Light's wavelength determines its color, with shorter wavelengths appearing blue/violet and longer wavelengths appearing red.
2. Staining techniques in microbiology use color to enhance the visibility of microorganisms.
3. The human eye can perceive wavelengths approximately between 400 nm (violet) and 700 nm (red).
4. Different colors can indicate various properties of microorganisms, such as their cell wall composition.
5. Fluorescent stains emit specific colors when exposed to UV light, aiding in the identification of microbial structures.

Review Questions

• How does the wavelength of light affect its color?
• Why are staining techniques important in microbiology?
• What range of wavelengths can the human eye perceive?

Related terms

Wavelength:

The distance between successive peaks of a wave, determining its color.

Staining:

A technique used to enhance contrast in samples, often by adding colored chemicals.

Fluorescence:

The emission of light by a substance that has absorbed light or other electromagnetic radiation.