säteilyvirta
Säteilyvirta, also known as radiant flux, is a measure of the total power of electromagnetic radiation. It quantifies the rate at which energy is emitted, transmitted, or received in the form of waves or particles. This concept is fundamental in fields such as physics, astronomy, and engineering, particularly in the study of light and other forms of electromagnetic radiation.
The unit of säteilyvirta in the International System of Units (SI) is the watt (W), which represents
In astronomy, säteilyvirta is used to measure the luminosity of stars and other celestial bodies. The total
The concept of säteilyvirta is closely related to other radiometric quantities, such as irradiance and radiance.