Light microscopes

Definition

Light microscopes are optical instruments that use visible light and lenses to magnify small objects. They are commonly used to observe cells and other microscopic structures in biology.

5 Must Know Facts For Your Next Test

1. Light microscopes typically magnify objects up to 1,000 times their original size.
2. They consist of an eyepiece lens, objective lenses, a stage, and a light source.
3. The resolution of light microscopes is limited to about 200 nanometers due to the wavelength of visible light.
4. Staining techniques are often used to enhance contrast when viewing specimens under a light microscope.
5. Compound light microscopes have multiple objective lenses with different magnifications which can be rotated into place.

Review Questions

Related terms

Eyepiece Lens: The part of the microscope you look through, usually with a 10x or 15x magnification.

Objective Lens: The primary optical lens on a microscope, which ranges from low (4x) to high (100x) magnification.

Staining Techniques: Methods used to enhance contrast in microscopic images by applying dyes or stains to specimens.