Lecture 2 & 3 - Techniques for Observing Microorganisms

We use microscopes to help improve the resolution of our vision.The most common type of microscope is the light microscope.

The light microscope uses visible light, which is the electromagnetic radiation that has a wavelength of ~400-800 nm, which include all the colors of the wind. Colors are determined by the wavelength of the radiation, and the radiation has an energy that is inversely proportional to its wavelength. ==clarify==

There are five types of light microscopes: bright-field, dark-field, phase contrast, fluorescence, and differential interference contrast.

There are two types of electron microscopes: transmission electron microscopy (TEM), and scanning electron microscopy (SEM).

In class questions

