This makes it possible to slide the object plate through the adjusting screw.Ĭross table is a technical term which is a table construction that is mounted into a rail system. Higher quality microscopes sometimes use a cross table as a table. By sliding the platen, you can select the part of the object you want to view. The microscope stage is the part that serves to place the object plate with a cover glass on it. The stage clip acts as a holder for the object plate and ensures that it doesn’t fall out of place accidentally. By rotating the revolver, you can select the lens with the desired level of magnification.Īrm is a holder connected to all components that function as a support for the microscope so that the microscope can be used properly. Objective revolvers are used in microscopes with multiple objective lenses, which have different magnification factors. The size of the incoming light cone will be adjusted to the size of the human eye.īody tube is part of the microscope that serves to accommodate the lens system that enlarges the specimen. The function of the ocular lens on a microscope is to convert the enlarged real-middle image from the objective into an enlarged virtual-image. This is the part that has at least one or more lenses. The ocular lens is part of the optical system, which is directed at the user of the microscope. The direction and magnitude of the bending of light is determined by the refractive index of the two mediums that make up the interface. The bending of light is determined by its index of refraction, which is a measure of how much a substance slows down the speed of light. When a ray of light passes from one medium to another, it is bent at the interface causing refraction. The principle of a light microscope is to visualize an image by using the ability of the lens to bend light and focus it on the specimen is what makes up the image. Specimens can vary from bacteria to cells and other microbial particles. The transparency of the specimen allows for easy and fast light penetration. The image is then passed through one or two lenses for magnification to view. The function of the light microscope is based on its ability to focus a beam of light through a very small and transparent specimen, to produce an image. Compound light microscope: has a higher magnification than a simple microscope because it uses at least two sets of lenses, an objective lens and an eyepiece.Simple light microscope: it has a low magnification because it uses a single lens.Depending also on the number of lenses, there are two types of microscope: Microscopic magnification varies greatly depending on the type and number of lenses that make up the microscope. The specimen is usually placed close to a microscopic lens. A light microscope uses a lens to focus light on a specimen, magnifying it to produce an image.
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