The first concepts of a microscope are formed in schoolat the lessons of biology. There, children learn in practice that with the help of this optical device you can consider small objects that can not be seen with the naked eye. A microscope, its structure is of interest to many schoolchildren. The continuation of these interesting lessons for one of them becomes the whole further adult life. When choosing some professions, you need to know the structure of the microscope, since it is the main tool in the work.
The structure of the microscope
The device of optical devices correspondslaws of optics. The structure of the microscope is based on its constituent parts. The nodes of the device in the form of a tube, eyepiece, lens, stand, table for the location of the subject of research, illuminator with a condenser have a specific purpose.
The rack holds a tube with an eyepiece on itself,lens. To the counter is attached a stage with an illuminator and a condenser. The illuminator is a built-in lamp or a mirror, which serves to illuminate the object under study. The image is more vivid in the illuminator with an electric lamp. The purpose of the condenser in this system is to regulate the illumination, to focus the rays on the object under study. The structure of microscopes without condensers is known, a single lens is installed in them. In practical work it is more convenient to use optics with a moving table.
The structure of the microscope, its constructiondirectly depend on the purpose of this device. For scientific research, X-ray and electronic optical equipment are used that have a more complex device than light devices.
The structure of the light microscope differssimplicity. These are the most affordable optical instruments, they are most widely used in practice. The eyepiece in the form of two magnifying glasses placed in the frame, and the lens, which also consists of magnifying glasses, tucked into the frame, are the main nodes of the light microscope. The whole set is inserted into the tube and attached to a tripod in which the stage is mounted with a mirror under it, as well as an illuminator with a condenser.
The main principle of the light microscopeis an increase in the image of the object placed on the object stage by passing through it rays of light, with further exposure to the objective lens system. The same role is played by eyepiece lenses, which are used by the researcher in the process of studying the object.
It should be noted that light microscopes are also notare the same. The difference between them is determined by the number of optical blocks. There are monocular, binocular or stereomicroscopes with one or two optical blocks.
Despite the fact that these optical deviceshave been used for many years, they remain incredibly in demand. Every year they improve, become more precise. The last word in the history of such useful devices as microscopes has not yet been told.