# The microscope is the most useful and necessary tool for scientists in the laboratory

The microscope is the most useful and necessary tool for scientists in the laboratory. In our experiments, our aim was to use and understand the functions of a microscope properly. There are some concepts to understand the microscope.
First one is resolution. In a simple definition, resolution is a concept which allows us to differentiate two objects. For example, when two objects are very close to each other we cannot differentiate them with the naked eye, but microscope has a bigger resolution than a naked eye so that the microscope allows us to differentiate two different objects.
The second one is limit of resolution. It is the shortest distance between two objects that a microscope can show. If the distance between two objects is smaller than the limit of resolution, it cannot be separated with a microscope and it would be look like a whole object rather than different objects. Limit of resolution can be found by this formula: l.r = 0,61 ?/ N.A. (Abbe equation), thus limit of resolution does not depend on the characteristics of an objective lens, it depends on the light source.