A grenade is an explosive weapon typically thrown by hand, but can also refer to a shell shot out by a rifle or a grenade launcher. A modern hand grenade generally consists of an explosive charge, a detonator mechanism, an internal striker to trigger the detonator, and a safety lever secured by a linchpin. The user pulls the safety pin before throwing, and once thrown the safety lever gets released, allowing the striker to trigger a primer that ignites a fuze, which burns down to the detonator and explodes the main charge. Grenades work by dispersing shrapnels, shockwave, chemical aerosols and flammables. Fragmentation grenades are probably the most common in modern armies, and when the word grenade is used colloquially, it is generally assumed to refer to a fragmentation grenade. Their outer casings, generally made of a hard synthetic material or steel, are designed to rupture and fragmentize on detonation, sending out numerous fragments as fast-flying projectiles.
关于Grenade - Bruno Mars
Released as the second single from Bruno Mars' debut studio album Doo-Wops & Hooligans, the song is about heartbreak with Mars singing "I'd catch a grenade for you."
Grenade - Bruno Mars的成就
It was the second best selling digital single of 2011. The song received nominations for both Song of the Year and Record of the Year at the 2012 Grammy Awards.
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Ketchum Grenade - The Ketchum Hand Grenade was a type of grenade used in the American Civil War. It was patented on August 20, 1861 by William F. Ketchum, a mayor of Buffalo, N.Y., and was partially adopted in the Union Army. They were used in battles such as Vicksburg and Petersburg.. Rocket-propelled grenade - A rocket-propelled grenade is a shoulder-fired missile weapon that launches rockets equipped with an explosive warhead. Most RPGs can be carried by an individual soldier, and are frequently used as anti-tank weapons.. Satchel charge - A satchel charge is a demolition device, primarily intended for combat, whose primary components are a charge of dynamite or a more potent explosive such as C-4 plastic explosive, a carrying device functionally similar to a satchel or messenger bag, and a triggering mechanism; the term covers.... Technology of the Song Dynasty - The Song dynasty invented some technological advances in Chinese history, many of which came from talented statesmen drafted by the government through imperial examinations. The ingenuity of advanced mechanical engineering had a long tradition in China.. Grenades.. Infantry weapons.. Incendiary weapons.. Non-lethal weapons.. Hand grenades.
