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Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
ACP-131 [1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States. When the meanings of the codes contained in ACP-131 are translated into various ...
A ring torus with aspect ratio 3, the ratio between the diameters of the larger (magenta) circle and the smaller (red) circle. In geometry, a torus ( pl.: tori or toruses) is a surface of revolution generated by revolving a circle in three-dimensional space one full revolution about an axis that is coplanar with the circle.
Have Doughnut. Have Doughnut flying in 1968. NASIC document describing the program. Have Doughnut was the name of a Defense Intelligence Agency project whose purpose was to evaluate and exploit a MiG-21 "Fishbed-E" that the United States Air Force acquired in 1967 from Israel. Israel acquired the aircraft as the result of its Operation Diamond ...
The Supplemental Mathematical Operators block (U+2A00–U+2AFF) contains various mathematical symbols, including N-ary operators, summations and integrals, intersections and unions, logical and relational operators, and subset/superset relations. Supplemental Mathematical Operators [1] Official Unicode Consortium code chart (PDF) 0.
List of HTTP status codes - Wikipediawikipedia.org
Code 1: Respond to the call without emergency lights and sirens. The term "Code 4" is also occasionally considered a response code, though it generally only means "call has been handled or resolved, no further units respond".
Zone 8 uses four 2-digit codes (81, 82, 84, 86) and four sets of 3-digit codes (80x, 85x, 87x, 88x) to serve East Asia, South Asia and special services. 83x and 89x are unallocated. Zone 9 uses seven 2-digit codes (90–95, 98) and three sets of 3-digit codes (96x, 97x, 99x) to serve the Middle East , West Asia , Central Asia , parts of South ...
It is easy to check that this operator has all the properties of a density operator. Conversely, the Schrödinger–HJW theorem implies that all density operators can be written as tr 2 | Ψ Ψ | {\displaystyle \operatorname {tr} _{2}\left|\Psi \right\rangle \left\langle \Psi \right|} for some state | Ψ {\displaystyle \left|\Psi \right ...
OF-1 – OF-2: Junior officers; Other rank codes. OR1–OR9 (lowest rank code to highest) are used for other ranks: OR-5 – OR-9: Non-commissioned officers; OR-1 – OR-4: Enlisted ranks; Comparison to US system. The numbers in the system broadly correspond to the U.S. uniformed services pay grades, with OR-x replacing E-x.
The Cooper Do-nuts Riot was an alleged uprising in reaction to police harassment of LGBT people at a 24-hour donut cafe in Los Angeles in the 1960s. Whether the riot actually happened, the date, location and whether or not the cafe was a branch of the Cooper chain are all disputed, and there is a lack of contemporary documentary evidence, with the Los Angeles Police Department (LAPD) stating ...