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A radar speed gun, also known as a radar gun, speed gun, or speed trap gun, is a device used to measure the speed of moving objects. It is commonly used by police to check the speed of moving vehicles while conducting traffic enforcement , and in professional sports to measure speeds such as those of baseball pitches , [ 1 ] tennis serves , and ...
The first modern KBBI dictionary was published during the 5th Indonesian Language Congress on 28 October 1988. The first edition contains approximately 62,000 entries. The dictionary was compiled by a team led by the Head of the Language Center, Anton M. Moeliono , with chief editors Sri Sukesi Adiwimarta and Adi Sunaryo.
Shooting sports is a group of competitive and recreational sporting activities involving proficiency tests of accuracy, precision and speed in shooting — the art of using ranged weapons, mainly small arms (firearms and airguns, in forms such as handguns, [1] rifles [2] and shotguns [3]) and bows/crossbows. [4] [5]
For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance.Projectiles traveling less than the speed of sound (about 340 m/s (1,100 ft/s) in dry air at sea level) are subsonic, while those traveling faster are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the ...
Here the spear gun is connected to a buoy via a float rope. After spearing a fish, the spearfisher detaches the float rope and uses a speed stick (a metal spike) attached to the float rope to thread the fish onto the float rope through its gills.
1945, a row of 20 mm Oerlikon guns aboard the Essex-class aircraft carrier USS Hornet. The Oerlikon gun was installed aboard United States Navy ships from 1942, replacing the M2 Browning machine gun, which lacked range and firepower, and largely superseding the 1.1"/75 caliber gun, which was heavier and had less mechanical reliability. It ...
Radar speed guns use a microwave signal that is directed at a vehicle; the Doppler effect is used to derive its speed. LIDAR speed guns utilize the time of flight of laser pulses to make a series of timestamped measurements of a vehicle's distance from the laser; the data is then used to calculate the vehicle's speed. [20]
A BB gun is a type of air gun designed to shoot metallic spherical projectiles called BBs (not to be confused with similar-looking bearing balls), which are approximately the same size as BB-size lead birdshot used in shotguns (0.180 in or 4.6 mm in diameter).