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.
Luminance is a derived measure, expressed in Candela per square metre (\( cd / m^2 \)). An alias for the unit \( cd / m^2 \) (unofficial, but still commonly used) is Nit. Luminance and illumination (Lux) are related, in the sense that luminance is typically used for light-emitting surfaces and illumination for surfaces that are being lit.
deï¬nition of candela, this is a luminous power of 1/683 watts. One candela radiating in all directions emits 4Ï lumens. Itâs useful to picture that the number of lumens ï¬owing out of a source is a measurement of the total luminous power in watts of the source. 5 2.4 Luminance: Candela per Square Metre, (Nit) [6] Consider that the luminous energy from the previous point source intersects with some surface such as the envel- lope of a bulb or the frosted plexiglass surface of a sign.