👉 A phos-ronosc-op-sor, also known as a phos-rono-sor, is a type of astronomical device used to measure and record the light emitted by stars. It consists of two mirrors that are placed on opposite sides of a prism-like structure called a "phosphoroscope." When light passes through the phosphoroscope from one side to the other, it produces an interference pattern on the screen. The interference pattern can be analyzed to determine the direction of light
