A laser beam is a focused stream of light that is created by a device called a laser. The term "laser" stands for "Light Amplification by Stimulated Emission of Radiation." Unlike regular light, which spreads out in all directions, a laser beam is highly concentrated and can travel long distances without losing much intensity. Laser beams are used in various applications, including medical procedures, communication technologies, and manufacturing. They can cut through materials, deliver precise measurements, and even transmit data over long distances. The unique properties of laser light make it a valuable tool in many fields.