arcsecond
2
9.9
- noun
- /ˈɑrkˌsɛkənd/
- Specialized
:
arcosegundo
- For d, put in 1 AU, and for >? put in 1 arcsecond.
- 0.1 arcseconds
- 45 arcseconds
- arcsecond resolution
Examples
-
The angular diameter of Jupiter's disk was about 45 arcseconds during those observations.
Academic text (2000) -
The telescope can resolve objects with an angular separation of less than 1 arcsecond.
-
The pixel resolution is 15 arcseconds.
Academic text (2007) -
The zenith sector was developed to read to an accuracy of 0.1 arcsecond, which was equal to a land distance of ten feet.
Academic text (2006) -
Hubble's resolution is 0.1 arcseconds no matter how far away an object is.
Blog text (16) -
The transient afterglows they see can, in the best cases, locate the source to within 0.1 arcsecond.
Academic text (2005) -
Even the Hubble Space Telescope cannot resolve features much smaller than 0.1 arcseconds.
Academic text (1997) -
If I understand correctly, Hubble's telescope has a resolution of 0.05 arcseconds under ideal conditions.
Blog text (13) -
Chandra's four nested hyperboloid-paraboloid reflectors provide an unprecedented imaging angular resolution of better than 1 arcsecond (see the image above).
Academic text (2002) -
When the antennas are spaced farthest apart, the array attains its highest resolution: 1.4 arcseconds at a wavelength of 20 centimeters.
Academic text (1996)
Synonyms
4
7.8
A small unit of angle equal to one sixtieth of a minute
How Large
Surface Forms
Morphology
Etymology
Arcsecond is made of arc and second, and it literally means a 'second' of an arc, like the time words 'minute' and 'second' that split an hour into smaller parts. That's why an arcsecond is a very small angle equal to one of 3,600 parts of a degree.