Upright microscopesApplications of laboratory microscopes Upright microscopes are the most common type, with the lighting system below the stage and the lens system above; inverted microscopes, particularly useful for cell culture, reverse this configuration.
The most common types of microscopes used in teaching are monocular light microscopes (80%), followed by binocular optical microscopes (16%), digital microscopes (3%), and stereomicroscopes (1%). A total of 43% of teachers perform microscopy using the demonstration method, and 37% of teachers use practical work.
Compound light microscopesCompound light microscopes are one of the most familiar of the different types of microscopes as they are most often found in science and biology classrooms.
Optical. The most common type of microscope (and the first invented) is the optical microscope. This is an optical instrument containing one or more lenses producing an enlarged image of a sample placed in the focal plane.
Fluorescence microscopes are especially useful in clinical microbiology. They can be used to identify pathogens, to find particular species within an environment, or to find the locations of particular molecules and structures within a cell.
Inverted microscopes are useful for observing living cells or organisms at the bottom of a large container (e.g., a tissue culture flask) under more natural conditions than on a glass slide, as is the case with a conventional microscope.
Transmission electron microscopes are designed to examine the internal structures of a cell whereas a scanning electron microscope only allows visualization of the surface of a structure.
With two lenses, the compound microscope offers better magnification than a simple microscope; the second lens magnifies the image of the first. Compound microscopes are bright field microscopes, meaning that the specimen is lit from underneath, and they can be binocular or monocular.
Microscopy is the act of using a microscope to view tiny things that cannot be seen with the unaided eye. There are three main types: optical microscopy, scanning probe microscopy, and electron microscopy. Optical microscopes bounce light up objects and use lenses or mirrors to magnify the image.
The Acoustic Microscope.Most commonly used are.Compound Microscope.Digital microscope.Electron microscope.
Typically, a compound microscope is used for viewing samples at high magnification (40 - 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens (in the eyepiece) and the objective lenses (close to the sample).
Brightfield microscopy is very simple to use with fewer adjustments needed to be made to view specimens. Some specimens can be viewed without staining and the optics used in the brightfield technique don't alter the color of the specimen.