There are 2*pi stradians or tau steradians in a hemisphere.
There are 2
One.
none
You do not convert. STERADIAN is a two dimensioal measurement RADIAN is a one dimensional measurement. Just as you cannot convert area into degrees (of angular measurement)
A hemisphere has two faces.
Find out your selfs
hemispheres and deg (degrees) are not compatible. solid angles are measured in steradians of spheres 2pi steradians or 0.5 spheres in a hemisphere In cartography, a hemisphere would encompass 180 degrees of longitude.
Spheres are measured with solid angles (which are like two dimensional angles). These angles can be measure with square degrees or steradians. A sphere measures 129300/π square degrees (or about 41,253 square degrees). A sphere measures 4π steradians (or about 12.566 steradians.)
At first, let us define an angle in radians: Consider an arc of lenght L over an angle alfa in a circle with radius R. The angle alfa is defined as alfa=L/R [in radians]. Similarly, an stereo angle is defined in a sphere with radius R over an area S, and the stereo angle alfa is defined as: alfa=S/R^2 [in steradians]. The sphere has S=4.pi.R^2, so the corresponding angle of the sphere in steradians is alfa=S/R^2 alfa=4.pi.R^2/R^2 alfa=4.pi [steradians]
The measure of the angle of a cube is pi/2 steradians.
They are measures of angular displacement. In two dimensional space they may be measured in degrees (by beginners) or in radians. There are 2*pi radians in a revolution. In 3-d space angles are measured in steradians. A sphere measures 4*pi steradians
There is one face on a hemisphere.
There are four hemispheres in the world. Northern Hemisphere, Southern Hemisphere, Western Hemisphere, and Eastern Hemisphere.
The world can be divided into the northern hemisphere the eastern hemisphere the southern hemisphere and the western hemisphere.
The world is divided into 4 quarters - western hemisphere, eastern hemisphere, northern hemisphere, and southern hemisphere.
There are about 166 countries in the northern hemisphere
There are about 166 countries in the Northern Hemisphere
There are 150 glaciers in the northern hemisphere itself.