light physics

Light is a form of energy that travels in waves and behaves both as a wave and a particle. It moves through space at a constant speed—about 186,282 miles per second in a vacuum. Light interacts with objects by reflecting, absorbing, or transmitting, which helps us see and color the world around us. It spans a spectrum of wavelengths, from gamma rays to radio waves, with visible light being just a small part. Understanding light physics explains phenomena like rainbows, the colors we see, and how lenses and cameras work.