A strobe is a high intensity flashing beam of light that is used in a variety of applications. It is often used in photography to capture fast-moving objects, as well as in nightclubs and other venues to create a dramatic effect. Strobe lights are also used in emergency vehicles and warning systems to alert people of potential danger. The intense flashes of light produced by a strobe can be seen from far distances, making them an effective way to communicate warnings or draw attention.