Laser pointers

Laser pointers are small devices that emit a very narrow, intense beam of light through a process called stimulated emission. This light is coherent, meaning the photons move in sync, resulting in a focused, bright beam. They typically operate at visible wavelengths, making the beam visible. Laser pointers are used in presentations, astronomy, and other applications requiring precise, directed light. Despite their convenience, they should be used responsibly, as the concentrated beam can cause eye damage or interfere with pilots and drivers if improperly directed.