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A second of arc, arcsecond (abbreviated as arcsec), or arc second, denoted by the symbol ″, [2] is a unit of angular measurement equal to 1 / 60 of a minute of arc, 1 / 3600 of a degree, [1] 1 / 1 296 000 of a turn, and π / 648 000 (about 1 / 206 264.8 ) of a radian.
A common adjustment value in firearm sights is 1 cm at 100 meters which equals 10 mm / 100 m = 1 / 10 mrad. The true definition of a milliradian is based on a unit circle with a radius of one and an arc divided into 1,000 mrad per radian, hence 2,000 π or approximately 6,283.185 milliradians in one turn , and rifle scope ...
The numerical values for latitude and longitude can occur in a number of different units or formats: [2] sexagesimal degree: degrees, minutes, and seconds : 40° 26′ 46″ N 79° 58′ 56″ W; degrees and decimal minutes: 40° 26.767′ N 79° 58.933′ W; decimal degrees: +40.446 -79.982; There are 60 minutes in a degree and 60 seconds in a ...
[25] [26] The standard FIFA football pitch for international matches is 105 m (344 ft) long by 68 m (223 ft) wide (7,140 m 2 or 0.714 ha or 1.76 acres); FIFA allows for a variance of up to 5 m (16.4 ft) in length in either direction and 7 m (23.0 ft) more or 4 m (13.1 ft) less in width (and larger departures if the pitch is not used for ...
One libra (lit. "pound") was equal to 0.460 246 34 kg as it was legally defined. [1] Some other units and legal equivalents are given below: 1 tomin = 1 ⁄ 768 libra 1 adarme = 1 ⁄ 256 libra 1 ochava ("eighth") = 1 ⁄ 128 libra 1 onza ("ounce") = 1 ⁄ 16 libra 1 arroba = 25 libras 1 quintal ("hundredweight") = 100 libras 1 terco = 160 ...
At some time a value of 33 inches (838.2 mm) was adopted in California. [citation needed] In Texas, a vara was defined as 33 + 1 ⁄ 3 inches (846.67 mm), or 1 yard = 1.08 vara. [citation needed] The vara and the corresponding unit of area, the square vara, were introduced in the 19th century to measure Spanish land grants.
Furthermore, it is divisible by every number from 1 to 10 except 7. [note 2] This property has many useful applications, such as dividing the world into 24 time zones, each of which is nominally 15° of longitude, to correlate with the established 24-hour day convention. Finally, it may be the case that more than one of these factors has come ...
According to the "Date" system in Knuth's article, which substitutes a 10-clarke "mingo" for a month and a 100-clarke "cowznofski", for a year, the date of October 29, 2007 is rendered as "Cal 7, 201 C. M." (for Cowznofsko Madi, or "in the Cowznofski of our MAD"). The dates are calculated from October 1, 1952, the date MAD was first published.