Search results
Results from the WOW.Com Content Network
Lycopodium powder is a yellow-tan dust-like powder historically used as a flash powder. [1] Today, the principal use of the powder is to create flashes or flames that are large and impressive but relatively easy to manage safely in magic acts and for cinema and theatrical special effects .
M-80s are an American class of large powerful firecrackers, sometimes called salutes. [1] M-80s were originally made in the mid 20th century for the U.S. military to simulate explosives or artillery fire. The "M" is designated by a U.S. military convention for "standard" equipment and "80" is for the 80 grains (5.2 grams) of flash powder within ...
Dry chemical powder is used on all classes of fires. Dry chemical powder puts out the fire by coating the burning material with a thin layer of dust, thereby separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out the fire.
Tiếng nói Việt Nam [33] Tuổi Trẻ [34] [35] Văn nghệ Quân đội [36] Y học Quân sự [37] Below is a list of websites published in Vietnam in alphabetical order. 24h.com.vn [38] Báo Mới [39] Báo Điện tử Chính phủ nước Cộng hòa Xã hội chủ nghĩa Việt Nam [40] Việt Báo [41] VietNamNet [42] Việt Nam ...
The flash powder explodes in midair with a loud bang and a bright white flash. Single-tube airbombs were banned in Britain in 2004, because they are classed as a cheap nuisance firework. Multishot airbombs are still legal in Britain. The airbomb effect, a loud bang and flash, is still part of many larger fireworks.
"Flash powder and flash-powder devices pose exceptionally high risks to children, who typically cannot understand the danger and may be less adept with safe handling techniques" " In certain mixtures it is not uncommon for this sensitivity to spontaneously change over time, or due to change in the environment, or to other unknowable factors in ...
A model attribution edit summary is Content in this edit is translated from the existing Vietnamese Wikipedia article at [[:vi:Dầu Tiếng (thị trấn)]]; see its history for attribution. You may also add the template {{Translated|vi|Dầu Tiếng (thị trấn)}} to the talk page. For more guidance, see Wikipedia:Translation
The electric flash-lamp was invented by Joshua Cohen (a.k.a. Joshua Lionel Cohen of the Lionel toy train fame) in 1899, and by Paul Boyer in France. [1] It was granted U.S. patent number 636,492. [2] This flash of bright light from the flash-lamp was used for indoor photography in the late nineteenth century and the early part of the twentieth ...