Definition:Second of Arc
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Definition
The second (of arc) is a unit of measurement of the length of an arc of a circle.
It is defined as the length of the arc which subtends $1$ second (of angle) at the center of the circle.
Also see
- Results about seconds of arc can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): degree of arc
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): second of arc
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): degree of arc
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): second of arc