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Dark-field microscopy (also called dark-ground microscopy) describes microscopy methods, in both light and electron microscopy, which exclude the unscattered beam from the image. Consequently, the field around the specimen (i.e., where there is no specimen to scatter the beam) is generally dark. In optical microscopes a darkfield condenser lens ...
A Foldscope is an optical microscope that can be assembled from a punched sheet of cardstock, a spherical glass lens, a light emitting diode (LED) and a diffuser panel, along with a watch battery that powers the LED. [4] Once assembled, the Foldscope is about the size of a bookmark. The Foldscope weighs 8 grams [citation needed] and comes in a ...
Edmund Scientific Corporation, based in Barrington, New Jersey, was founded in 1942 as a retailer of surplus optical parts like lenses. It later branched out into complete systems like telescopes and microscopes, and in the 1960s, a wide variety of science toys and kits. Through the 1970s and 80s they were best known for their mail order sales ...
Wild Heerbrugg - Drawing set RZ31. The Wild (Heerbrugg) company (pronounced "vilt") [ 1] was founded in 1921 in Switzerland. The company manufactured optical instruments, such as surveying instruments, microscopes and instruments for photogrammetry among others. The company changed its name several times, first being known as "Heinrich Wild ...
Paulo Campos. Paulo C. Campos (July 27, 1921 – June 2, 2007) was a Filipino physician and educator noted for his promotion of wider community health care and his achievements in the field of nuclear medicine for which he was dubbed as "The Father of Nuclear Medicine in the Philippines". [ 1] The first president of the National Academy of ...
Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...
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