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In a distribution, full width at half maximum (FWHM) is the difference between the two values of the independent variable at which the dependent variable is equal to half of its maximum value. In other words, it is the width of a spectrum curve measured between those points on the y -axis which are half the maximum amplitude.
A A&TWF – Acquisition and technology work force a – Army AA – Assembly area AA – Anti-aircraft AA – Aegis ashore AAA – Anti-aircraft artillery "Triple A" AAAV – Advanced Amphibious Assault Vehicle AAC – Army Air Corps AAD – Armored amphibious dozer AADC – Area air defense commander AAE – Army acquisition executive AAG – Anti-aircraft gun AAK – Appliqué armor kit (US ...
Military units and formations established in 1821 (2 C, 12 P) Military units and formations established in 1822 (5 P) Military units and formations established in 1823 (1 C, 5 P)
In the peak width definition, the value of ΔM is the width of the peak measured at a specified fraction of the peak height, for example 0.5%, 5%, 10% or 50%. The latter is called the full width at half maximum (FWHM).
military history The study of the history of armed conflict and its impact on society. It may range from the study of specific military actions and engagements to the much broader examination of warfare as a political tool. modern history. Also called the modern period or modernity. modernity 1.
United States Army Center of Military History. 1998. 60-14. Archived from the original on 26 December 2012. Shalett, Sidney (14 May 1946). "Army is Revamped in Economy Drive". The New York Times. James Williams, "A history of Army aviation : from its beginnings to the War on Terror," New York, iUniverse, 2005
(NATO). The "D" may stand for "Day". [3] E-Day The unnamed day on which a NATO exercise commences. (NATO) F-Hour The effective time of announcement by the U.S. Secretary of Defense to the Military Departments of a decision to mobilize Reserve units. (US) G-Day The unnamed day on which an order, normally national, is given to deploy a unit ...
6) defines the beam diameter as the distance between diametrically opposed points in that cross-section of a beam where the power per unit area is 1/e (0.368) times that of the peak power per unit area. This is the beam diameter definition that is used for computing the maximum permissible exposure to a laser beam.