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  2. Minute and second of arc - Wikipedia

    en.wikipedia.org/wiki/Minute_and_second_of_arc

    The physical group size equivalent to m minutes of arc can be calculated as follows: group size = tan(⁠ m / 60 ⁠) × distance. In the example previously given, for 1 minute of arc, and substituting 3,600 inches for 100 yards, 3,600 tan(⁠ 1 / 60 ⁠) ≈ 1.047 inches. In metric units 1 MOA at 100 metres ≈ 2.908 centimetres.

  3. Acre - Wikipedia

    en.wikipedia.org/wiki/Acre

    One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.

  4. Parsec - Wikipedia

    en.wikipedia.org/wiki/Parsec

    [a] The parsec unit is obtained by the use of parallax and trigonometry, and is defined as the distance at which 1 AU subtends an angle of one arcsecond [1] (⁠ 1 / 3600 ⁠ of a degree). The nearest star, Proxima Centauri , is about 1.3 parsecs (4.2 light-years) from the Sun : from that distance, the gap between the Earth and the Sun spans ...

  5. Minute and second of arc - en.wikipedia.org

    en.wikipedia.org/api/rest_v1/page/mobile-html/...

    A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol ′, is a unit of angular measurement equal to ⁠ 1 / 60 ⁠ of one degree. [1] Since one degree is ⁠ 1 / 360 ⁠ of a turn, or complete rotation, one arcminute is ⁠ 1 / 21 600 ⁠ of a turn.

  6. Talk:Minute and second of arc - Wikipedia

    en.wikipedia.org/wiki/Talk:Minute_and_second_of_arc

    minutes, (1 minute = 15/60 degrees = 1/4 of a degree = 15 arcminutes) and; seconds, (1 second = 15/3600 degrees = 1/240 of a degree = 15 arcseconds) This a fair thing to put in an article on arcminutes (or arcseconds for that matter).

  7. Angular diameter - Wikipedia

    en.wikipedia.org/wiki/Angular_diameter

    an object of diameter 725.27 km at a distance of 1 astronomical unit (AU) an object of diameter 45 866 916 km at 1 light-year; an object of diameter 1 AU (149 597 871 km) at a distance of 1 parsec (pc) Thus, the angular diameter of Earth's orbit around the Sun as viewed from a distance of 1 pc is 2″, as 1 AU is the mean radius of Earth's orbit.

  8. Bill Gates says he now owns 1 out of every 4000 acres of all ...

    www.aol.com/finance/bill-gates-says-now-owns...

    Recent estimates are that Bill Gates owns around 270,000 acres of farmland around the United States. Gates himself has said in a recent Reddit AMA that he owns roughly 1/4000 of all farmland in ...

  9. Measurement of land in Punjab - Wikipedia

    en.wikipedia.org/wiki/Measurement_of_land_in_Punjab

    20 Marla = 1 Kanal; 8 Kanal = 1 Acre (Ghumman) 1 Acre = 36 Karam (north to south) X 40 Karam (east to west) Bigha-Biswa system conversion to current Acre system 1 Karam = 57.157 inch; 1 Biswansi = 1 Karam X 1 Karam; 20 Biswansi = 1 Biswa; 20 Biswa = 1 Bigha; 4 Bigha और 16 Biswa = 1 Acre; Killa-Biswa-Bigha system (old system, no longer used ...