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An Army Jump Master giving the hand signal for "30 seconds" over a drop zone. Hand and arm signals for United States Army use were first established in Field Manual 21-60. They were amended in Training Circular 3-21.60. [1] Hand and Arm signals are one of the most common forms of communication used by United States Army soldiers or group of ...
Hand signals are agreed gestures that people make with their hands or body to communicate in a non-verbal way. When used in traffic, hand signals are often used to convey driver's intention of their next movement. In some countries, hand signals can apply to any vehicle whose signal lights are missing or damaged.
Diving signals — hand communication methods while scuba diving; Flag semaphores — telegraphy systems using hand-held flags, other objects, or the hands themselves; Finger counting. Chinese number gestures; Open outcry hand signaling; Fingerspelling or manual alphabets; Gang signals — signs used to signify allegiance to a gang or local ...
A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005). Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and - φέρω (-phero) '-bearer' [1]) is a semaphore system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.
The Chinese variant became much more complex including pointing (using both forefinger and middle finger instead of forefinger-only as in Japan, and used when checking signals, doors, speed and other major aspects) and caution (bending the right elbow by 90° and lifting the forearm upright, used when a checking procedure is finished or caution ...
The signal is performed by holding one hand up with the thumb tucked into the palm, then folding the four other fingers down, symbolically trapping the thumb by the rest of the fingers. [3] It was designed intentionally as a single continuous hand movement, rather than a sign held in one position, so it could be made easily visible.
The device uses a combination of biosensors and AI software to identify the hand gestures a person intends to make by analyzing electrical signals from their arm. It’s far from the first gesture ...
A long exposure of a United States Navy Landing Signalman Enlisted (LSE) directing a SH-60F Sea Hawk to take off using marshalling wands. Despite efforts to standaridize aspects of aviation communication, such as terminology and language, hand signals used to guide aircraft on the ground still vary between various major organizations, such as the International Civil Aviation Organization [3 ...