Microorganisms are incredibly minute organisms that can't be seen by the naked eye; a microscope is needed to view these.
A microscope is a device comprised of different lenses that magnify extremely minute objects and organisms to permit for a quick study of their characteristics.
The initial microscope was invented in the 17th century in the proper execution of the single lens machine. Since then, it's grown in complexity with respect to the requirements of its use.
Present day microscopes are comprised of multiple lenses, with some microscopes being able to magnify objects up to at least one million times their actual size. But such microscopes are special devices which are found in high-end research and development laboratories.
Microscopes can broadly be split into two major categories – light microscopes and electron microscopes. Light microscopes use light to illuminate the sample under magnification. You can get more information about microscopes at https://www.microscopeinternational.com/product/olympus-cx23-binocular-microscope/.
You can find four various kinds of light microscopes including bright field, dark field, phase contrast, and fluorescence. The normal laboratory microscope is a good example of a light microscope.
Electron microscopes on the other hand use transmission or scanning for magnifying and detecting objects. These are also the 2 categories into which electron microscopes are divided. All electron microscopes use electrons in place of light waves for illumination of the item under magnification.