fotonimäärä
Fotonimäärä refers to the quantity of photons, which are elementary particles that carry electromagnetic force and are the quantum of the electromagnetic field. In essence, it is a count of how many individual packets of light or other electromagnetic radiation are present. The concept is fundamental in quantum mechanics and optics, as it describes the discrete nature of light.
The number of photons in a given beam of light or radiation depends on the intensity and
In many applications, the total energy of the radiation is what's important, and this energy is directly