Online Microbiology and Biology Notes
Microscopy and Microscope Notes. Notes on Microscopy. Online Microscopy related notes. Microscopy Notes for undergraduate and graduate students with diagrams.
The first Scanning Electron Microscope was initially made by Mafred von Ardenne in 1937 with an aim to surpass the transmission electron Microscope. He used high-resolution power to scan a small raster using a beam of electrons that were focused on the raster. He also aimed at reducing the problems of chromatic aberrations images produced by the Transmission electron Microscopes. …
History of Microscopy: Overview The evolution of the Microbiology field put to perspective the need to identify, view, observe and understand microorganisms, including their structural morphologies and mechanisms. Microbiology’s scope is to study organisms and minute agents that can only be examined and observed with a microscope. Although scientifically, the first simple microscope was discovered by two Dutch scientists, Zaccharias …
Read moreLight Microscope- definition, principle, types, parts, magnification
Overview of microscope Having been constructed in the 16th Century, Microscopes have revolutionalized science with their ability to magnify small objects such as microbial cells, producing images with definitive structures that are identifiable and characterizable. So, what are microscopes? Microscopes are instruments that are used in science laboratories, to visualize very minute objects such as cells, microorganisms, giving a contrasting …
Read moreParts of a microscope with functions and labeled diagram
Types of Microscopes A good microscope should have three properties: Good resolution: Resolution power refers to the ability to produce separate images of closely placed objects so that they can be distinguished as two separate entities. The resolution power of: The unaided human eye is about 0.2 mm (200 μm) The light microscope is about 0.2 μm An electron microscope …
Fluorescence Microscope from LEAM Solution Inc About LEAM Solution LEAM Solution Inc. are innovators producing applicable microscope equipment using already existing microscopes in the market. Ten years ago, LE.AM Solution Inc. dived into the microscope market by selling low-priced microscopes and services. Back then, they were merely a small technology-related startup company as they had little knowledge and experience with …
Darkfield Microscope Definition Microbiology, the branch of science that has so vastly extended and expanded our knowledge of the living world, owes its existence to Antoni van Leeuwenhoek. In 1673, with the aid of a crude microscope consisting of a biconcave lens enclosed in two metal plates, Leeuwenhoek introduced the world to the existence of microbial forms of life. Over …
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Phase contrast microscopy definition Unstained living cells absorb practically no light. Poor light absorption results in extremely small differences in the intensity distribution in the image. This makes the cells barely, or not at all, visible in a brightfield microscope. Phase-contrast microscopy is an optical microscopy technique that converts phase shifts in the light passing through a transparent specimen to …
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Fluorescence microscope definition 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. Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation while phosphorescence is a specific type of photoluminescence related to fluorescence. …
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Compound Microscope Definition The term microscope can be split into two separate words, ‘micro’ and ‘scope’, where the term ‘micro’ means small or tiny, and ‘scope’ means to view or to observe. Therefore, a microscope can be understood as an instrument to observe tiny elements. The optical microscope often referred to as the light microscope, is a type of microscope that uses visible light and a system …
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Electron microscope definition An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. It is a special type of microscope having a high resolution of images, able to magnify objects in nanometres, which are formed by controlled use of electrons in vacuum captured on a phosphorescent screen. Ernst Ruska (1906-1988), a German engineer and academic professor, …
Read moreElectron microscope- definition, principle, types, uses, images