hand signals
Hand signals are gestures made with the hands to communicate messages without using words. They can convey a variety of meanings, such as directions, warnings, or requests. Common examples include raising a hand to signal for silence or using a thumbs-up to indicate approval. Hand signals are often used in situations where verbal communication is difficult, such as in noisy environments or during sports.
In many professions, specific hand signals are standardized for clarity and safety. For instance, in traffic control, officers use hand signals to direct vehicles and pedestrians. Similarly, in scuba diving, divers use hand signals to communicate underwater, ensuring safety and coordination without the need for speech.