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Class: MICB - Microbiology; Subject: Microbiology; University: Delgado Community College; Term: Forever 1989;
Typology: Quizzes
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TERM 1
DEFINITION 1 The optical microscope, often referred to as the "light microscope", is a type of microscope which uses visible light and a system of lenses to magnify images of small samples. TERM 2
DEFINITION 2 Dark field microscopy describes microscopy methods, in both light and electron microscopy, which exclude the unscattered beam from the image. TERM 3
DEFINITION 3 Phase contrast microscopy is an optical microscopy technique that converts phase shifts in light passing through a transparent specimen to brightness changes in the image. TERM 4
DEFINITION 4 A fluorescence microscope is an optical microscope that uses fluorescence and phosphorescence instead of, or in addition to, reflection and absorption to study properties of organic or inorganic substances. TERM 5
DEFINITION 5 Bright field microscopy is the simplest of all the optical microscopy illumination techniques. Sample illumination is transmitted white light and contrast in the sample is caused by absorbance of some of the transmitted light in dense areas of the sample.
TERM 6
DEFINITION 6 In an optical instrument, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image. TERM 7
DEFINITION 7 In optics, a diaphragm is a thin opaque structure with an opening at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. TERM 8
DEFINITION 8 A condenser is one of the main components of the optical system of many transmitted light compound microscopes. TERM 9
DEFINITION 9 A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity.