photon measurement

Photon measurement involves detecting and quantifying individual particles of light called photons. This process uses specialized instruments, such as photodetectors or cameras, to capture photons arriving from a light source. By counting how many photons are detected over a period or measuring their energy and timing, scientists can analyze properties like intensity, wavelength, and direction of the light. This helps in understanding phenomena such as the brightness of a star, the functioning of quantum devices, or the behavior of electromagnetic waves, providing precise insights into how light interacts with matter.