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minute of arc
(redirected from Arc-second)

    Also found in: Wikipedia 0.01 sec.
min·ute of arc  (mnt)
n.
See minute1.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.minute of arc - a unit of angular distance equal to a 60th of a degreeminute of arc - a unit of angular distance equal to a 60th of a degree
arcminute, minute
angular unit - a unit of measurement for angles
arcdegree, degree - a measure for arcs and angles; "there are 360 degrees in a circle"
arcsecond, second - a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
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Solar granules are typically the size of Alaska--though they look small from Earth, a mere arc-second or two across.
Sunquakes: Probing the Interior of the Sun by Science News
A balanced line driver output allows for long distance signal transmissions, and the system's 780 nm semiconductor laser offers maximum output power of 5 mW, with signal error of 25 arc-seconds.
Laser rotary encoder by Designfax
05 arc-second at an infrared wavelength of 2 microns.
A window on turbulence: taking the twinkle out of infrared images of ... by Peterson, Ivars / Science News
 
 
 
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