请输入您要查询的百科知识:

 

词条 Starting pistol
释义

  1. Criminal use

  2. See also

  3. References

A starting pistol or starter pistol is a blank handgun[1] that is fired to start track and field races, as well as competitive swimming races at some meets. The sound and smoke of the gun going off serves as the signal for the athletes to begin the event. Starter guns "cannot fire real ammunition" without first being extensively modified. In most places, trying to "modify the replica is illegal."[2] Beside sporting events, they are also used in films and in TV or stage shows.[1] Blank shells or caps are used to prevent expelling projectiles,[1] and only small amount of smoke can be seen when shot. Starting pistols may also include modified versions of standard pistols incapable of firing bullets, most commonly achieved by welding an obstruction into the barrel. This is less common nowadays, especially in Western countries. When electronic timing is used, a sensor is often affixed to the gun, which sends an electronic signal to the timing system upon firing. For deaf competitors or for modern electronic systems, a light may be used instead.

An issue with the use of starting pistols is that, since the report of the pistol is carried to the competitors at the speed of sound, which takes about 3 milliseconds to travel one metre, positions nearest the starter hear the report a few milliseconds before further positions. This issue is exaggerated in races where the runners begin in a stagger, putting a significant distance between the nearest and furthest runners. To avoid this problem, the pistol is in all major competitions wired with a microphone that transmits the sound virtually instantaneously to loudspeakers directly behind each competitor.

With security after the September 11 attacks on the US becoming prevalent, causing issues with starting pistols[3], a trend developed to use electronic starting systems that do not use pistols but use a "dummy" prop pistol which cannot function as a firearm and that is wired to the timing system. When the starter presses the button, they emit a signal to play a simulated gunshot that is broadcast to loudspeakers behind each lane, show a flash, emit simulated smoke {{Explain|reason=What exactly is simulated smoke|date=June 2018}}, and start the timing clock. Many venues have switched to the new format.[4] Beyond the security concerns, it has also been observed that even with the use of loudspeakers, some competitors still wait for the actual sound of the gun to reach them, and since the new all-electronic starting pistols have no such problems, they became the official way of starting games at the 2012 Summer Olympics.[5]

Criminal use

Some pistols made to fire only blanks can be converted to fire live ammunition. Such makeshift firearms are used in crime and many are illegal to possess in certain jurisdictions.[6][7]

See also

Incidents involving starting pistols
  • Algiers Motel incident
  • LOT Flight 165 hijacking
  • Lufthansa Flight 592
  • David Kang

References

1. ^{{cite web |url=http://www.collectorsarmoury.com/departments.asp?dept=3 |title=Blank Guns |publisher=Collector's Armoury, Ltd. |location=United States |accessdate=2016-07-22}}
2. ^{{cite web |url=http://www.collectorsarmoury.com/faq.asp |title=Blank Guns |publisher=Collector's Armoury, Ltd. |location=United States |accessdate=2016-07-22}}
3. ^{{Cite web|url=https://phillipsminiguns.com/blogs/news/the-ancient-tradition-of-starter-guns|title=The Ancient Tradition of Starter Guns|last=Powell|first=Donna|date=22 June 2018|website=Phillips Mini Guns - Charles Mini Works, LLC|archive-url=|archive-date=|dead-url=|access-date=}}
4. ^Wizards at Omega create space-age starter's pistol
5. ^[https://www.theatlantic.com/technology/archive/2012/07/the-speed-of-sound-is-too-slow-for-olympic-athletes/260413/ The Speed of Sound is too Slow for Olympic Athletes], The Atlantic.
6. ^{{cite book|last=Heale|first=John|title=One Blood: Inside Britain's Gang Culture|url=https://books.google.com/books?id=qPGXiKSv7s4C&pg=PA2004|date=15 October 2009|publisher=Simon and Schuster|location=New York|isbn=978-1-84983-051-5|page=2004}}
7. ^{{cite book|editor=ATF|title=State Laws and Published Ordinances, Firearms, 2010-2011|url=https://books.google.com/books?id=l4BuxW9CljcC&pg=PA116|date=23 April 2013|publisher=Government Printing Office|isbn=978-0-16-091510-9|page=116}}
{{DEFAULTSORT:Starting Pistol}}

4 : Firearms|Athletics (track and field) equipment|Speed skating equipment|Cycling equipment

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/11/12 5:16:17