- 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...
- 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...
-
which includes two
dimensionless derived units, the
radian (rad) and the
steradian (sr). Some
other units such as the hour, litre, tonne, bar, and electronvolt...
-
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...
- 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...
-
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...
-
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...
-
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...
