Micrograph

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A micrograph of a hard disk head. The size of the front face (which is the "trailing face" of the slider) is about 0.3 mm × 1.0 mm. The (not visible) bottom face of the slider is about 1.0 mm × 1.25 mm (so-called "nano" size) and faces the hard disk platter.

A micrograph, microphotograph or photomicrograph is a photograph or similar image taken through a microscope or similar device to show a magnified image of an item. Canadian inventor Reginald Aubrey Fessenden is credited with inventing photomicrography.

To produce a micrograph, a camera may be affixed to a microscope either in place of the eyepiece or a specialist microscope may be used which has a camera and eyepiece arrangement. A prepared specimen is put under the microscope in the usual way and photographs taken. Alternatively, the image may be scanned and stored electronically and displayed on a screen and/or printed.

Micrographs are widely used in forensic engineering and forensic science, especially for recording Trace evidence. It is also routinely used in scanning electron microscopy, often combined with energy-dispersive X-ray spectroscopy so that the area of the sample selected for analysis is directly visible.

Types

Light micrograph

Algal Cells by Roman Vishniac.

Photomicrograph of a thin section of a limestone with ooids. The largest is approximately 1.2 mm in diameter.

A light micrograph is a micrograph prepared using a light microscope, a process referred to as photomicroscopy (a portmanteau term of the words photography and microscopy). At a basic level, photomicroscopy may be performed simply by hooking up a regular camera to a microscope, thereby enabling the user to take photographs at reasonably high magnification.

Photomicroscopists take photographs of many biologic subjects such as cells and proteins and insect eyes. Roman Vishniac was a pioneer in the field of photomicroscopy, specializing in the photography of living creatures in full motion. He also made major developments in light-interruption photography and color photomicroscopy.

Electron micrograph

An electron micrograph is a micrograph prepared using an electron microscope.

External links

• Cheap options in Microphotography - from olympuszuiko.com
• Make a Micrograph -- This interactive Flash presentation shows how researchers create a three-color micrograph. From the research department of Children's Hospital Boston.cs:Mikrofotografie

de:Mikrofotografie

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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .