photographic plate
51History of photography — The first permanent photograph was an image produced in 1826[1] by the French inventor Joseph Nicéphore Niépce.[2] …
52X-ray — [ 22 December 1895 and presented to Professor Ludwig Zehnder of the Physik Institut, University of Freiburg, on 1 January 1896. The dark oval on the third finger is a shadow produced by her ring. [cite book last = Kevles first =Bettyann Holtzmann …
53holography — /heuh log reuh fee/, n. the process or technique of making holograms. [1795 1805; HOLO + GRAPHY] * * * Method of recording or reproducing a three dimensional image, or hologram, by means of a pattern of interference produced using a laser beam.… …
54Astrophotography — An image of Orion s Belt composited from digitized black and white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between… …
55telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
56electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
57mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …
58optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
59Darkroom — For other uses, see Darkroom (disambiguation). A dark room in a high school, which is part of the school s photography classroom. A darkroom is a room that can be made completely dark to allow the processing of light sensitive photographic… …
60Cottingley Fairies — The first of the five photographs, taken by Elsie Wright in 1917, shows Frances Griffiths with the alleged fairies. The Cottingley Fairies appear in a series of five photographs taken by Elsie Wright and Frances Griffiths, two young cousins who… …
