The Collaborative International Dictionary
Micrograph \Mi"cro*graph\, n. [See Micrography.]
An instrument for executing minute writing or engraving.
a graphic image, such as a photograph or drawing, representing an object as seen with a microscope, usually much enlarged as compared with the original object. A photograph of a microscopic image is also called a photomicrograph or microphotograph.
microphotograph \mi`cro*pho"to*graph\ (m[imac]`kr[-o]*f[=o]"t[-o]*gr[.a]f or m[i^]k`r[-o]*f[=o]"t[-o]*gr[.a]f), n. [Micro- + photograph.]
A microscopically small photograph of a picture, writing, printed page, etc.
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An enlarged representation of a microscopic object, produced by throwing upon a sensitive plate the magnified image of an object formed by a microscope or other suitable combination of lenses.
Note: A picture of this kind is preferably called a photomicrograph.
Wiktionary
n. 1 A photograph so reduced in size that it must be viewed through a lens or a microscope. 2 A photograph taken through a microscope, an enlarged picture of a very small item or area; a photomicrograph. vb. To create such a photograph
Wikipedia
Microphotographs are photographs shrunk to microscopic scale (see microfilm) – not to be confused with photomicrographs, which are photographs of microscopic things. Microphotography is the art of making such images. Other applications of microphotography include espionage such as in the Hollow Nickel Case.
Using the daguerreotype process, John Benjamin Dancer was one of the first to produce microphotographs, in 1839. He achieved a reduction ratio of 160:1. Dancer perfected his reduction procedures with Frederick Scott Archer’s wet collodion process, developed in 1850–51, but he dismissed his decades-long work on microphotographs as a personal hobby, and did not document his procedures. The idea that microphotography could be no more than a novelty was an opinion shared by the 1858 Dictionary of Photography, which called the process "somewhat trifling and childish."
Novelty viewing devices such as Stanhopes were once a popular way to carry and view microphotographs.
An important application of microphotography is in microforms.
Usage examples of "microphotograph".
I have tried the rifles and the firing pins, one by one, and after I made microphotographs of the firing pins with special reference to the rounded ends and also photographs of the corresponding rounded depressions in the primers fired by them, it was forced upon me that cartridges fired by each individual firing pin could be positively identified.
I have secured excellent microphotographs of the marks made by various weapons on the cartridges and bullets.
He was busily engaged in testing something through his powerful microscopes and had a large number of curious microphotographs spread out on the table.
On making microphotographs of firing pins or hammers, with special reference to the rounded ends and also photographs of the corresponding rounded depressions in the primers fired by them it is forced on any one that cartridges fired by each individual rifle or pistol can positively be identified.
I have here, also, about a hundred microphotographs of the fibres in other kinds of paper, many of them bonds.
I have here also about a hundred microphotographs of the fibres in other kinds of paper, many of them bonds.
Though microphotographs (of a lesser reduction) had carried messages to beleaguered Paris as far back as 1870, a tip to the F.