(mathematics) A unit of solid angle equal to (π/200)2 steradian, or approximately 2.46740 × 10-4 steradian.
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(mathematics) A unit of solid angle equal to (π/200)2 steradian, or approximately 2.46740 × 10-4 steradian.
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| Measures and Units: square grade |
solid angle Symbol (g)2. The equivalent to the square of the planar grade, = ( π/200)2 steradian = π/160000 sphere. (See also square degree.)
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