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A ballistic chronograph or gun chronograph is a measuring instrument used to measure the velocity of a projectile in flight, typically fired from a gun or other firearm. The instrument is often useful for tasks such as gauging the utility of a firearm or safety of non-lethal projectiles fired from items such as a paintball gun or BB gun .
The term chronograph comes from the Greek χρονογράφος (khronográphos 'time recording'), from χρόνος (khrónos 'time') and γράφω (gráphō 'to write'). '). Early versions of the chronograph are the only ones that actually used any "writing": marking the dial with a small pen attached to the index so that the length of the pen mark would indicate how much time had
The Aberdeen chronograph was the first portable gun chronograph, an instrument for measuring the muzzle velocity and striking power of a projectile fired by a gun. It was invented in 1918 by Alfred Lee Loomis at the U.S. Army's Aberdeen Proving Ground .
Gallet MultiChron Pilot Chronograph (1975)—12-hour recording chronograph with rotating 12-hour bezel for time zone calculations, dial indications for determining miles-per-hour Desert Storm Wristwatch (1990)— prototype submitted to the US Government for approval prior to use during the Gulf War , final version supplied by Gallet to pilots ...
The chronophotographic gun is one of the ancestors of the movie camera. It was invented in 1882 by Étienne-Jules Marey, a French scientist and chronophotographer. It could shoot 12 images per second and it was the first invention to capture moving images on the same chronomatographic plate using a metal shutter. [1]
Typical standard parallax-free distances for hunting telescopic sights are 100 yards (91 m) or 100 meters (109 yd) as most sport hunting rarely exceed 300 yards (270 m). Some long-range target and "tactical-style" sights without parallax compensation may be adjusted to be parallax-free at ranges up to 300 yards (270 m) to make them better ...
Building on the success of the K800, the K810 added a number of features that made its 3.2-MP autofocus camera even more camera-like. Sony Ericsson also expanded its Cyber-shot branding to a mid-range handset, the K550, which had a 2.0-MP camera bundled with autofocus and LED flash.
Anschutz then managed to develop a folding hand camera with a “focal-plane shutter,” an early model of a folding bellows, and a flatbed-type press camera that allowed photos to be taken at 1/1000 second exposures. This enabled a faster setup of Muybridge's multiple-camera system, able to take more exposures faster due to the rapidity of the ...
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