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See second1.
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Noun1.arcsecond - a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
angular unit - a unit of measurement for angles
arcminute, minute of arc, minute - a unit of angular distance equal to a 60th of a degree
References in periodicals archive ?
The CORNISH survey has used the VLA to map 110 square degrees of the northern inner Galactic plane in the 5 GHz coninuum with 1 arcsecond resolution.
The first iGPS inspired by GPS was developed in the 90s by the American Arcsecond company and has provided a new technical solution for large-scale precision coordinate measurement [2, 3].
With an angular measuring sensitivity of more than 1 arcsecond (0.
The nondispersivity condition therefore requires the sample to be aligned with arcsecond precision.
Our measurements have a precision of 27 millionths of an arcsecond per year.
Seemingly plausible surface geometry can lead to situations where the two definitions of angle differ by as much as a few tenths of an arcsecond.
3 Sky brightness, expressed as magnitudes per square arcsecond, for selected locations in South Africa measured with a SQM-L meter.
The typical spatial resolution of those observations is 15 arcseconds or larger (1 arcsecond corresponds to 1/3600 of 1 degree), however, ALMA achieved a high resolution of 3.
Further, deposition uniformity was greatly improved with crystal quality distributions being reduced closer to the 55 arcsecond X-Ray rocking curve width previously reported.
This rotation was accomplished with a closed-loop motion control system that had a repeatability of approximately one arcsecond.
arcsecond One sixtieth of an arcminute, or 1/3600 of a degree.
It would be the world's best high-resolution infrared telescope and would excel at the study of stellar surfaces, black holes, and quasars, objects that appear smaller than 1 arcsecond on the sky.