Semen is produced and originates from the seminal vesicle, which is located in the pelvis. The process that results in the discharge of semen is called ejaculation. Semen is also a form of genetic material. In animals, semen has been collected for cryoconservation. Cryoconservation of animal genetic resources is a practice that calls for the collection of genetic material in efforts for conservation of a particular breed.
The measure of this brightness is the luminance in candela per square metre6. 2.4.1 Luminance and Brightness We have used the terms luminance and brightness interchangeably.
1 lumen = 1 candela * 1 steradian, where candela is a measure of light intensity and 1 steradian is 1/12.566th of a sphere. (The steradian is defined as: a unit of measure equal to the solid angle subtended at the center of a sphere by an area on the surface of the sphere that is equal to the radius squared. Source)