exposure technique
31Parinacota Volcano — Infobox Mountain Name = Parinacota Photo = Parinacota.jpg Caption = Parinacota and Chungará Lake Elevation = 6,348 metres (20,827 feet) Location = Bolivia Chile Range = Andes Prominence = Coordinates = coord|18|10|0|S|69|9|0|W|type:mountain… …
32LET — may refer to:*Lorentz ether theory, a scientific theory *Let Kunovice, a line of Czechoslovakian aircraft *Linear energy transfer, the energy transfer of ionizing particle to the matter penetrated by the radiation *LET, an assignment command in… …
33photogram — /foh teuh gram /, n. a silhouette photograph made by placing an object directly on sensitized paper and exposing it to light. [1855 60; PHOTO + GRAM1] * * * ▪ photographic print shadowlike photographic image made on paper without the use of …
34welding — Technique for joining metallic parts, usually through the application of heat. Discovered in the 1st millennium AD during attempts to manipulate iron into useful shapes, the technique produced a strong, tough blade. Welding traditionally involved …
35thermotherapy — Exposure to elevated temperatures, a technique mainly used for virus or mycoplasma elimination, taking advantage of the higher thermostability of the host over its pathogen. Synonym: heat therapy …
36Film speed — is the measure of a photographic film s sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital… …
37Computed tomography — tomos (slice) and graphein (to write).Computed tomography was originally known as the EMI scan as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial… …
38motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
39photography, history of — Introduction method of recording the image of an object through the action of light, or related radiation, on a light sensitive material. The word, derived from the Greek photos (“light”) and graphein (“to draw”), was first used in the… …
40radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
