Light is electromagnetic radiation that can be detected by the human eye across a wide range of wavelengths. It has various effects depending on the materials it interacts with, including electrical, thermal, electrodynamic, electromagnetic, electrochemical, acoustic, and physiological effects. There are three main types of lighting - ambient lighting which provides a soft glow, task lighting which provides a concentrated light for focused work, and accent lighting which draws the eye to highlight specific objects or areas. Common lighting fixtures include recessed lights, pendants, wall sconces, desk lamps, and landscape lights to achieve different lighting effects.