📢 A megaphone is a handheld device that amplifies sound, allowing the user to project their voice over a greater distance. It consists of a cone-shaped horn and a handle with a built-in microphone or voice input. When someone speaks into the microphone, the sound is amplified and directed through the horn, resulting in a louder and more focused projection of sound. Megaphones are commonly used in public gatherings, sports events, protests, and emergency situations to communicate messages effectively to a large audience.