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Expansion microscopy. Expansion microscopy (ExM) is a sample preparation tool for biological samples that allows investigators to identify small structures by expanding them using a polymer system. [ 1] The premise is to introduce a polymer network into cellular or tissue samples, and then physically expand that polymer network using chemical ...
Enlarger lenses, like the dialyte construction, are generally symmetrical in design or nearly so, optimised for sharp focus at 2x to 10x magnification. [1] The light passes through a film holder, which holds the exposed and developed photographic negative or transparency. Prints made with an enlarger are called enlargements.
Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a size ratio called optical magnification. When this number is less than one, it refers to a reduction in size, sometimes called de-magnification .
Super-resolution microscopy. Super-resolution microscopy is a series of techniques in optical microscopy that allow such images to have resolutions higher than those imposed by the diffraction limit, [ 1][ 2] which is due to the diffraction of light. [ 3] Super-resolution imaging techniques rely on the near-field (photon-tunneling microscopy ...
Digital image processing is the use of a digital computer to process digital images through an algorithm. [ 1][ 2] As a subcategory or field of digital signal processing, digital image processing has many advantages over analog image processing. It allows a much wider range of algorithms to be applied to the input data and can avoid problems ...
Photographic processing transforms the latent image into a visible image, makes this permanent and renders it insensitive to light. [ 1] All processes based upon the gelatin silver process are similar, regardless of the film or paper's manufacturer.
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