Second

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Related to Arc seconds: Milliarcsecond

Second

1. See: Second mortgage.

2. See: Second round.
References in periodicals archive ?
Many of the best sporting optics have resolving power in the 5 to 7 Arc Seconds range, and occasionally as little as 2 or 3.
Its three rotating laser planes are perpendicular to 2 arc seconds and flat to 2 arc seconds in a 180-degree sweep.
With a 600-rpm rotation speed and an accuracy of plus/minus 15 arc seconds, the RL-H3C provides timesavings and job site performance.
In comparison, previous X-ray telescopes were capable of focusing X-rays to five arc seconds.
These include pointing at 80 to 250 celestial targets with an accuracy of 5 to 10 arc seconds.
We drew on our experience integrating more than 550 payloads to achieve alignments on the spacecraft platform within arc seconds (one arc second equals 1/3,600 degree).
Ideal for motor and drive control in heavy duty industries and harsh environments, this encoder's ultra-precise optical scanning system delivers unrivaled Sin/Cos 1 V P-P output for exact positioning systems with absolute accuracy to 60 arc seconds at a high dynamic frequency.
The 360,000-position NC table offers an indexing accuracy of [+ or -]7 arc seconds and an indexing repeatability of [+ or -]3.
The satellite can map extended objects and locate point sources to within a few arc seconds.
Its operating specifications include an angle range of [+ or -][degrees]C, resolution of 1 arc second and null repeatability of [less than or equal to]5 arc seconds.
Digital Display in Arc Seconds, Inches/10" or mm/M.