Spin parameter

Spin parameter may refer to one of several different parameters in physics.

Black hole physics

One of two dimensionless parameters relating to black holes:

The spin parameter of an individual black hole, a variable with a value ranging from 0 to 1
The effective inspiral spin parameter for a pair of merging black holes, a variable with a value ranging from −1 to 1

Particle physics

The spin quantum number of an elementary particle, usually called just "spin", a constant with a value of $.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}⁠n/2⁠$ , where $n$ is a non-negative integer

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