Definition of Steradians. Meaning of Steradians. Synonyms of Steradians

- the unit, steradian, sr = rad2. Because the surface area A of a sphere is 4πr2, the definition implies that a sphere subtends 4π steradians (≈ 12.56637 sr)...
- solid angle of the Sun is 6.794×10−5 steradians and the average solid angle of the Moon is 6.418×10−5 steradians. In terms of the total celestial sphere...
- as equivalent to one candela-steradian (symbol cd·sr): 1 lm = 1 cd·sr. A full sphere has a solid angle of 4π steradians (≈ 12.56637 sr), so an isotropic...
- constellations is the total solid angle of the sky, which is exactly 4π steradians, or 4π × (180/π)2 = 129,600/π square degrees, or approximately 41,252...
- computers 4×π = 12.56637..., the solid angle of a complete sphere measured in steradians Hermetic detector (also called a 4π detector) This disambiguation page...
- directions, the total radiant flux would be about 18.40 mW, since there are 4π steradians in a sphere. A typical modern candle produces very roughly one candela...
- integral divided by π. This factor is obtained from the solid angle 2π steradians of a hemisphere decreased by integration over the cosine of the zenith...
- Latin spatium ("space"), is a unit of solid angle. 1 spat is equal to 4π steradians or approximately 41253 square degrees of solid angle (sequence A125560...
- being equal to ⁠π/180⁠ radians, a square degree is equal to (⁠π/180⁠)2 steradians (sr), or about ⁠1/3283⁠ sr or about 3.046×10−4 sr. The whole sphere has...
- of a platonic solid is equal to the solid angle of a full sphere (4π steradians) divided by the number of faces. This is equal to the angular deficiency...