photographic plate
71George Eastman — Infobox Person name = George Eastman image size = 200px caption = birth date = Birth date|1854|7|12 birth place = death date = Death date|1932|3|14 (aged 77) death place = resting place = Ashes Buried at Kodak Park other names = known for =… …
72Kirlian photography — refers to a form of photogram made with a high voltage. It is named after Semyon Kirlian, who in 1939 accidentally discovered that if an object on a photographic plate is connected to a source of high voltage, small corona discharges (created by… …
73Neon — This article is about the noble gas. For other uses, see Neon (disambiguation). fluorine ← neon → sodium …
74Mass spectrometry — (MS) is an analytical technique that measures the mass to charge ratio of charged particles.[1] It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical… …
75Crookes tube — A Crookes tube. The electrons travel in straight lines from the cathode on the left, shown by the shadow cast by the cross on the fluorescence on the righthand wall. The anode is at the bottom. A Crookes tube is an early experimental electrical… …
76develop — /dəˈvɛləp / (say duh veluhp) verb (t) 1. to bring out the capabilities or possibilities of; bring to a more advanced or effective state. 2. to cause to grow or expand. 3. to elaborate or expand in detail. 4. to bring into being or activity;… …
77Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …
78Leavitt , Henrietta Swan — (1868–1921) American astronomer Henrietta Leavitt was born the daughter of a Congregational minister in Lancaster, Massachusetts. Her interest in astronomy was aroused while she was at Radcliffe College (then the Society for the Collegiate… …
79Science of photography — refers to the use of science, such as chemistry and physics, in all aspects of photography. This applies to the camera, its lenses, physical operation of the camera, electronic camera internals, and the process of developing film in order to take …
80Ilford Photo — Infobox Company company name = Ilford Photo company company type = Limited foundation = 1879 location = Knutsford, Cheshire industry = Photography products = film, paper, chemicals homepage = [http://www.ilfordphoto.com/ www.ilfordphoto.com]… …
