Question: What are uses of a microscope?
About the article "Microscope", section "Abstract".

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An electron microscope uses a beam of electrons to illuminate a specimen and produce a magnified image.
Two common types of electron microscope are the scanning electron microscope (SEM) and transmission electron microscope (TEM). 
 variants.
There are many variants of the basic compound optical microscope design for specialized purposes.
Some of these are physical design differences allowing specialization for certain purposes:  Stereo microscope, a low powered microscope which provides a stereoscopic view of the sample, commonly used for dissection.
Comparison microscope, which has two separate light paths allowing direct comparison of two samples via one image in each eye.
Inverted microscope, for studying samples from below; useful for cell cultures in liquid, or for metallography.
Student microscope, designed for low cost, durability, and ease of use.
Fiber optic connector inspection microscope, designed for connector end-face inspection Other microscope variants are designed for different illumination techniques:  Petrographic microscope, whose design usually includes a polarizing filter, rotating stage and gypsum plate to facilitate the study of minerals or other crystalline materials whose optical properties can vary with orientation.
Polarizing microscope, similar to the petrographic microscope.
Phase contrast microscope, which applies the phase contrast illumination method.
Epifluorescence microscope, designed for analysis of samples which include fluorophores.
Confocal microscope, a widely used variant of epifluorescent illumination which uses a scanning laser to illuminate a sample for fluorescence.  
A microscope (from the , "mikrós", "small" and , "skopeîn", "to look" or "see") is an instrument used to see objects that are too small for the naked eye.
The science of investigating small objects using such an instrument is called microscopy.
Microscopic means invisible to the eye unless aided by a microscope.
There are many types of microscopes, the most common and first to be invented is the optical microscope which uses light to image the sample.
Other major types of microscopes are the electron microscope (both the transmission electron microscope and the scanning electron microscope) and the various types of scanning probe microscope.
A fluorescence microscope is an optical microscope that uses fluorescence and phosphorescence instead of, or in addition to, reflection and absorption to study properties of organic or inorganic substances.
The "fluorescence microscope" refers to any microscope that uses fluorescence to generate an image, whether it is a more simple set up like an epifluorescence microscope, or a more complicated design such as a confocal microscope, which uses optical sectioning to get better resolution of the fluorescent image. 
A simple microscope is a microscope that uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image.
Simple microscopes are not capable of high magnification.
The use of a single convex lens or groups of lenses are still found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes.