Solid Angle
see international system of units, angle
definition \((\tau \mathrm{rad})^2 = \tau^2 \mathrm{sr} = 1 \mathrm{surface}\), the surface of a sphere
a unit sphereical cap with an angle of \(1 \mathrm{sr}\) has area \(1\)
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Solid Anglesee international system of units, angle definition \((\tau \mathrm{rad})^2 = \tau^2 \mathrm{sr} = 1 \mathrm{surface}\), the surface of a sphere a unit sphereical cap with an angle of \(1 \mathrm{sr}\) has area \(1\) |
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