Spat (angular unit)

Unit of angle in solid geometry

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The spat (symbol sp[1]), from the Latin spatium ("space"), is a unit of solid angle.[2][3] One spat is equal to 4π steradians[1][3] or approximately 41253 square degrees of solid angle (sequence A125560 in the OEIS).[2] Thus 1 sp is the solid angle subtended by a complete sphere at its center.[2]

## See also

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* Turn (angle) — the plane angle counterpart of the spat, equivalent to 2π radians

## References

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1. ^ a b The Ultimate Online Reference for Engineers. Sunnyvale, California, USA: eFunda Inc. Retrieved 2015-10-19.
2. ^ a b c Rowlett, Russ (2018). "A Dictionary of Units of Measurement". Chapel Hill: University of North Carolina. Retrieved 2024-07-10.
3. ^ a b Glossary » Units » Solid Angle » Spat. Sunnyvale, California, USA: eFunda Inc.

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