Light science is the study of light, which includes the branch of optics. Optics is the study of the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. It is a branch of physics that studies the physical properties of light, such as its speed, wavelength, frequency, and intensity. It also studies the behavior of light when it interacts with matter, such as reflection, refraction, diffraction, and absorption.