Advantages And Disadvantages Of Microscope

INTRODUCTION;

The first very basic microscope was invented in the 1300’s, and was a basic primitive tube with two pieces of glass at both ends.Then in the 16th century lens makers began experimenting with magnification by grinding lens together which magnified objects, Galileo Galilei then adapted these lenses and invented the first device which became known as the microscope. So the discovery of microorganisms.From that day forward it became the instrument used to observe microscopic samples, cell function and structure. The microscope led scientists to discover the living things that caused illness and disease and in turn allowed them to be seen,named and then prevented .

LIGHT MICROSCOPE

The light microscope uses visible light to help

Researchers use it to examine microorganisms,cells, medical biopsy samples, metal and the features of various surfaces.One of the advantages of the electron microscope is that it uses high magnification ( 20,000,000x) and resolution which allows the researcher to see to closely lying structures as separate. It also uses electron lenses which have electron beams instead of light producing a very thin beam of electrons,sustained by electromagnetic lenses. One of the disadvantages of an electron microscope is that it only gives black and white images, but can be transferred to colour later to help highlight and locate important features.These microscopes are powerful enough to see viruses. Electron microscopes have helped scientists to discover specific cell features such as that of the mitochondria (a similar size to a virus) has a double membrane and that bacteria and single celled organisms are completely different from other cells. Because of the invention of electron microscope we now know what happens within a cell its structure and function. Unfortunately, the cell must be prepared in a vacuum removing the chance of working with live cells. Because the sample takes so long to prepare the sample may be distorted or