light microscope


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.

microscope

 [mi´kro-skōp]
an instrument used to obtain an enlarged image of small objects and reveal details of structure not otherwise distinguishable.
The light path of a darkfield microscope. From Hart and Shears, 1997.
acoustic microscope one using very high frequency ultrasound waves, which are focused on the object; the reflected beam is converted to an image by electronic processing.
binocular microscope one with two eyepieces, permitting use of both eyes simultaneously.
compound microscope one consisting of two lens systems whereby the image formed by the system near the object is magnified by the one nearer the eye.
darkfield microscope one so constructed that illumination is from the side of the field so that details appear light against a dark background.
electron microscope one in which an electron beam, instead of light, forms an image for viewing, allowing much greater magnification and resolution. The image may be viewed on a fluorescent screen or may be photographed. Types include scanning and transmission electron microscopes.
fluorescence microscope one used for the examination of specimens stained with fluorochromes or fluorochrome complexes, e.g., a fluorescein-labeled antibody, which fluoresces in ultraviolet light.
light microscope one in which the specimen is viewed under ordinary illumination.
operating microscope one designed for use in performance of delicate surgical procedures, e.g., on the middle ear or small vessels of the heart.
phase microscope (phase-contrast microscope) a microscope that alters the phase relationships of the light passing through and that passing around the object, the contrast permitting visualization of the object without the necessity for staining or other special preparation.
scanning electron microscope (SEM) an electron microscope that produces a high magnification image of the surface of a metal-coated specimen by scanning an electron beam and building an image from the electrons reflected at each point.
simple microscope one that consists of a single lens.
slit lamp microscope a corneal microscope with a special attachment that permits examination of the endothelium on the posterior surface of the cornea.
stereoscopic microscope a binocular microscope modified to give a three-dimensional view of the specimen.
transmission electron microscope (TEM) an electron microscope that produces highly magnified images of ultrathin tissue sections or other specimens. An electron beam passes through the metal-impregnated specimen and is focused by magnetic lenses into an image.
x-ray microscope one in which x-rays are used instead of light, the image usually being reproduced on film.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

light mi·cro·scope

a class of microscope that forms a magnified image using visible light.
Farlex Partner Medical Dictionary © Farlex 2012

light mi·cro·scope

(līt mīkrŏ-skōp)
Class of microscope that forms a magnified image using visible light.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Surprisingly, the number of glomeruli revealed by light microscope with lowering of the condenser lens exhibited the best correlation with those reported using histopathological evaluation despite the fact that the use of this microscopy technique has not been previously reported for the purpose of glomerular quantification.
In the study published by our team (Becerra et al.), we compared the light microscope with a digital system based on static images.
Video-enhanced DIC clearly visualized the growing acrosomal process, which was only 65 nm in diameter, about one fourth of the resolution limit of the light microscope, and could do so at 30 frames per s.
Emphasis is placed on proper illumination, calibration and preliminary observations made with stereomicroscopes and polarized light microscopes (PLM), which are the instruments typically used first in any fibrous evidence examinations.
Besides, there are no significant differences in student performance compared with the light microscope, a situation that did occur when comparing static digital systems with light microscopy (Weaker & Herbert).
A high-definition, three-dimensional light microscope captured this unusual view of sugar crystallizing out of a solution.
The multiple-magnification light microscope can employ various contrast methods, including fluorescent and polarized light.
Now researchers can use a routine light microscope to locate a feature of interest, and then transfer the sample to an electron microscope, which can be used to easily navigate to the feature and view the cellular ultrastructure.
The DisperGrader+ reflected light microscope, part of the company's line of control systems for competitive mixing, is highlighted in this four-page, four-color brochure.
The IlluminatIR[TM] conveniently mounts between the nose-piece and viewing head of a light microscope and provides immediate and accurate molecular information, helping to significantly speed up completion of analytical testing.
The exudate may then be collected and prepared for examination in one of three ways: 1) Draw lesion aspirates into the barrel of the needle with a tuberculin syringe and cap the needle (4); 2) touch a light microscope slide to the vesicle fluid; or 3) touch a 400-mesh, plastic-coated specimen grid directly to the base of the lesion (5).
The light microscope, scanning electron microscope (SEM) and electron microprobe are valuable in this evaluation.