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A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
Order of operations. In mathematics and computer programming, the order of operations is a collection of rules that reflect conventions about which operations to perform first in order to evaluate a given mathematical expression.
Form 4473. ATF Form 4473, October 2016 revision. A Firearms Transaction Record, or ATF Form 4473, is a seven-page form prescribed by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) required to be completed when a person proposes to purchase a firearm from a Federal Firearms License (FFL) holder, such as a gun dealer. [ 1]
PDF – PDF are Portable Document Format.ps, .ps, .gz – PostScript [clarification needed] SNP – SNP are Microsoft Access Report Snapshot; XPS – XPS; XSL-FO – XSL-FO (Formatting Objects) Configurations, Metadata CSS – CSS are Cascading Style Sheets.xslt, .xsl – XML Style Sheet.tpl – Web template
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [ 2] and completed in 1694). [ 1] The name comes from the translation of the German term for its operating mechanism, Staffelwalze ...
The teeth are moved by a second wheel located inside the first and moved by a side lever. A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. These wheels, also called pinwheels, could be set by using a side ...
The Preserving Welfare for Needs Not Weed Act ( H.R. 4137) is a bill that would prevent the use of electronic benefit transfer cards in businesses that sell marijuana. [1] The bill was introduced into the United States House of Representatives during the 113th United States Congress .
Leonardo Torres Quevedo (Spanish: [leoˈnaɾðo ˈtores keˈβeðo]; 28 December 1852 – 18 December 1936) was a Spanish civil engineer, mathematician and inventor with a career spanning the late 19th and early 20th centuries.