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Topic: Microscope

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Microscope slide

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Timeline of microscope technology

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Eyepiece

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	Molecular Expressions: Images from the Microscope
		Beneath the placid surface of any pond is a microscopic metropolis bustling with activity as tiny bizarre organisms pursue their lives; locomoting, eating, trying not to be eaten, excreting, and reproducing.
		The microscope drawing presented in the tutorial illustrates a cut-away diagram of the Olympus BX51 microscope equipped with a vertical illuminator and lamphouses for both diascopic (tungsten-halogen) and epi-fluorescence (mercury arc) light sources.
		Microscope configuration errors represent the greatest obstacle to quality photomicrographs, followed by errors in filter selection, film choice, aberration, dirt and debris, and processing mistakes.
	microscope.fsu.edu /index.html (5909 words)

	A-Z Microscope
		This led to the construction, in the 16th century, of a magnifier composed of a single convex lens, and this, in turn, led to the eventual development of the microscope.
		In the compound microscope, the lens closer to the object to be viewed is refers to as the "objective", while the lens closer to the eye is called the "eyepiece".
		Using a compound microscope that he had built himself, the 17th-century Englishman Robert Hooke discovered the fact that living things are composed of cells.
	www.az-microscope.on.ca /history.htm (500 words)

	Microscope - MSN Encarta
		Optical microscopes have a firm stand with a flat stage to hold the material examined and some means for moving the microscope tube toward and away from the specimen to bring it into focus.
		In a scanning electron microscope, a tightly focused electron beam moves over the entire sample to create a magnified image of the surface of the object in much the same way an electron beam scans an image onto the screen of a television.
		The electron probe microanalyzer, an electron microscope fitted with an X-ray spectrum analyzer, can examine the high-energy X rays emitted by the sample when it is bombarded with electrons.
	encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761562052 (1534 words)

	Microscope - Wikipedia, the free encyclopedia
		Van Leeuwenhoek's microscopes consisted of a single, small, convex lens mounted on a plate with a mechanism to hold the material to be examined (the sample or specimen).
		Most microscopes, however, have their own controllable light source that is focused through an optical device called a condenser with diaphragms and filters available to manage the quality and intensity of the light.
		The stereo microscope is often used to study the surfaces of solid specimens or to carry out close work such as sorting, dissection, microsurgery, watch-making, small circuit board manufacture or inspection, and the like.
	en.wikipedia.org /wiki/Microscope (2165 words)

	Microscope Glossary of Terms
		All of our microscopes that have 1000x magnification use Abbe condensers with a 1.25 N.A. There are two types of condensers - one is a spiral type that you turn to move it up or down and the other is on a rack and pinion system and is controlled with a condenser focusing knob.
		With a low power microscope the term generally used is "stereo" head because, unlike the compound microscope, the stereo has a separate objective lens for each eyepiece lens, producing two independent paths of light, one for each eye.
		Microscopes either have the bolt on mechanical stage that can be added (to many models) at any time or the integral mechanical stage that comes built in to the microscope.
	www.microscopeworld.com /MSWorld/glossary.aspx (3251 words)

	electron microscope
		Instrument that produces a magnified image by using a beam of electrons instead of light rays, as in an optical microscope.
		The development of the electron microscope has made possible the observation of very minute organisms, viruses, and even large molecules.
		A transmission electron microscope passes the electron beam through a very thin slice of a specimen.
	www.tiscali.co.uk /reference/encyclopaedia/hutchinson/m0015596.html (333 words)

	Microscope
		The possessor of a microscope is wealthy beyond the wildest dreams of avarice, for under the lens of his magical instrument he may visit kingdoms beyond the sight of less fortunate individuals.
		He may place upon the microscope slide a drop of pond water and gaze in amazement at the teeming life revealed there.
		He may explore the inside of a twig or stem and marvel at the precise regularity with which nature has constructed it.
	www.microscopestation.com (94 words)

	Specialty Microscopes - Special Microscope For Microscope Applications
		These epi-fluorescence microscopes have dichroic filter cubes and special fluorescence filters to provide the proper wavelength of light to be incident on the fluorescing specimen.
		Microscopes on boom stands are useful for repair of watches, surface mount devices, and circuit boards.
		And there are the projection microscopes with the ability to project a microscopic image to a wall or built-in projection screen.
	www.specialtymicroscopes.com (604 words)

	Tissue Culture Microscopes - Microscope For Cellular Tissue Cultures
		This requires the microscope to be inverted, with the microscope objectives pointing upward, thus the name inverted tissue culture microscope.
		This is opposite of the orientation of the typical compound light microscope with objectives pointing downward to view the microscope slide.
		Applications for tissue culture microscopes may be as varied as cellular biology, molecular biology, medical diagnostics, university and college level biology classroom experiments, microbiological study, environmental research, and medical research.
	www.tissueculturemicroscopes.com (413 words)

	Microscope
		The microscopes we use in school and at home trace their history back almost 400 years.
		The microscope works a lot like a refracting telescope except that the object is very close to the objective lens.
		Microscopes and Magnifying Lenses by Janice VanCleave (1993).
	www.yesmag.ca /how_work/microscope.html (823 words)

	Microscopes High Quality — Affordable Microscopes — Asia Microscopes Store
		Microscopes are increasingly becoming essential equipments in a lot of industries.
		We carry microscopes that are commonly used for manufacturing inspections, high-technology quality control, in areas such as semiconductor processing, medical viewing, cellular research, metallurgical analysis, and homeschool studies.
		Great Microscope’s objective is to establish itself as the preeminent global microscope manufacturer and marketer of microscopy apparatus and microscope tools and accessories, affordable microscope hardware and research equipment, and technology-based magnification systems.
	greatmicroscopes.com (735 words)

	microscope - Definitions from Dictionary.com
		Achromatic lens (Opt.), a lens composed usually of two separate lenses, a convex and concave, of substances having different refractive and dispersive powers, as crown and flint glass, with the curvatures so adjusted that the chromatic aberration produced by the one is corrected by other, and light emerges from the compound lens undecomposed.
		Achromatic telescope, or microscope, one in which the chromatic aberration is corrected, usually by means of a compound or achromatic object glass, and which gives images free from extraneous color.
		Compound microscope, an instrument consisting of a combination of lenses such that the image formed by the lens or set of lenses nearest the object (called the objective) is magnified by another lens called the ocular or eyepiece.
	dictionary.reference.com /browse/microscope (1921 words)

	Phase Contrast Microscopes for Phase Contrast Microscopy (PCM)
		A normal biological compound light microscope can be utilized to view stained living tissues and prepared slides, but unstained living tissue specimens typically are transparent and provide little viewing contrast under brightfield microscopy.
		A phase contrast microscopy (PCM) enabled microscope is able to view unstained living tissues with enhanced viewing contrast, allowing the biological researcher to see details normally unseen.
		Our phase contrast microscopes utilize a special viewing technique that translates a shift in light wave phase to a shift in intensity, and thus visible contrast.
	www.phasecontrastmicroscopes.com (263 words)

	Microscope - Valuable Information and Resources!
		Microscope Info: Presented at two levels, basic and advanced.
		Includes a buyer's guide, parts and specifications of a microscope, types of microscopes, glossary of terms and more advanced concepts like numerical aperture, field diameters, and measuring with metric units.
		Microscope Forums and Message Boards: Communicate with others interested in microscopy.
	www.microscope-microscope.org /microscope-home.htm (226 words)

	microscope, digital microscope, electrone microscope, light microscope and other microscopes at vpmt.com
		Microscope is the combination of two words; "micro" meaning small and "scope" meaning view.
		The creation of the compound microscope by the Janssens helped to advance the field of microbiology light years ahead of where it had been only just a few years earlier.
		These are very expensive and accurate microscopes and are widely used in medical field.
	vpmt.com /microscope.htm (255 words)

	A one Dollar Compound Microscope
		This microscope, which will cost you no more than about a dollar or so to build, is essentially identical to the expensive microscopes that professionals use.
		A microscope is essentially formed by two lenses: the objective and the eyepiece which is also referred to as the ocular.
		The manufacturers of commercial microscopes design their objectives by means of complex optical calculations and produce lenses according to parameters that they have defined analytically.
	www.funsci.com /fun3_en/ucomp1/ucomp1.htm (7542 words)

	Microscope
		The microscopes we use in school and at home trace their history back almost 400 years.
		The microscope works a lot like a refracting telescope except that the object is very close to the objective lens.
		Microscopes and Magnifying Lenses by Janice VanCleave (1993).
	www.yesmag.bc.ca /how_work/microscope.html (823 words)

	Chapter 1: The Microscope - Introduction
		A compound microscope is composed of two elements; a primary magnifying lens and a secondary lens system, similar to a telescope.
		This is a relatively inexpensive means of effecting the resolution of the microscope and thus nearly all microscopes are equipped with substage condensers.
		Modern microscope lenses are not single lenses, but highly complex collections of lenses assembled to enhance the refractive index while minimizing chromatic and spherical distortions of the image.
	homepages.gac.edu /~cellab/chpts/chpt1/intro1.html (3656 words)

	Electron microscope - Wikipedia, the free encyclopedia
		The electron microscope is a microscope that can magnify very small details with high resolving power due to the use of electrons as the source of illumination, magnifying at levels up to 2,000,000 times.
		Ruska had deduced that an electron microscope would be much more powerful than an ordinary optical microscope, because he knew that resolution increased with shorter wavelengths.
		The first practical electron microscope was built by Eli Franklin Burton and students, Cecil Hall, James Hillier and Albert Prebus, at the University of Toronto, Canada in 1938.
	en.wikipedia.org /wiki/Electron_microscope (1789 words)

	Simple microscope
		Microscopes were byproducts of research on telescopes by men such as Galileo and Kepler.
		His microscope was very simple, but his skill at grinding lenses made it superior to many of the compound microscopes used previously.
		To use the microscope the lens must be held almost in contact with the eye.
	bizarrelabs.com /micro.htm (1068 words)

	History of the Microscope
		It is believed that the microscope was discovered by accidentally inverting a telescope, as indicated by the “account that one of the first microscopes was six feet long and had a one inch barrel with a lens at either end” (Cohen, 1).
		One lens was at the eyepiece of the microscope (ocular), and the second lens was near the sample to be studied (objective).
		The new microscopes are not only able to use light as a way of reflecting the image of the sample, but they are more versatile and capable of using electrons of high resolution power to examine a sample and reproduce its image.
	campus.udayton.edu /~hume/Microscope/microscope.htm (2716 words)

	The Compound Light Microscope
		Microscope is the combination of two words; "micro" meaning small and "scope" meaning view.
		The creation of the compound microscope by the Janssens helped to advance the field of microbiology light years ahead of where it had been only just a few years earlier.
		Simple light microscopes of the past could magnify an object to 266X as in the case of Leeuwenhoek's microscope.
	www.southwestschools.org /jsfaculty/Microscopes/compoundscope.html (178 words)

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