How is light described in terms of its properties and behavior?

Light is described as a form of electromagnetic radiation that behaves like a wave and a particle. It travels in straight lines at a constant speed of about 186,282 miles per second in a vacuum. Light can be reflected, refracted, diffracted, and absorbed by different materials, and it can also be polarized. Its properties include wavelength, frequency, amplitude, and speed, which determine its color and intensity.