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Once the pack is taken out of the building, a radio transmitter located at the door triggers a timer (typically at least 10 seconds), after which the dye pack explosively releases [7] an aerosol (usually of Disperse Red 9) and sometimes tear gas. The release is intended to mark the money and/or the robber's body with a brightly colored stain so ...
Verruca is a genus of asymmetrical sessile barnacles in the family Verrucidae. There are about 20 described species in Verruca , around half of them extinct. [ 1 ] [ 2 ] [ 3 ]
The Butterfly Bomb (or Sprengbombe Dickwandig 2 kg or SD 2) was a German 2-kilogram (4.4 lb) anti-personnel submunition (or bomblet) used by the Luftwaffe during the Second World War. It was so named because the thin cylindrical metal outer shell which hinged open when the bomblet deployed gave it the superficial appearance of a large butterfly ...
A dust spray can often be used as a freeze spray. Many gas dusters contain HFC-134a (tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes.
Grapeshot used fewer but larger projectiles than were contained within canister or shrapnel shells. [1] Case shot broadly describes any multi-projectile artillery ammunition. The canister round is known as a case, so canister was sometimes called case shot and the term has confusingly become generic for grapeshot and shrapnel shells. [1]
The aerosol spray canister invented by USDA researchers, Lyle Goodhue and William Sullivan.. The concepts of aerosol probably go as far back as 1790. [1] The first aerosol spray can patent was granted in Oslo in 1927 to Erik Rotheim, a Norwegian chemical engineer, [1] [2] and a United States patent was granted for the invention in 1931. [3]
Freeze branding (sometimes called CryoBranding and the resulting brands, trichoglyphs [1]) is a technique involving a cryogenic coolant instead of heat to produce permanent marks on a variety of animals. [2] The coolant is used to lower the temperature of a branding iron such that its application to shaved skin will permanently alter hair ...
An ordinary glovebox, showing the two gloves for manipulation, with airlock on the right. The most straightforward type of air-free technique is the use of a glovebox.A "glove bag" uses the same idea, but is usually a poorer substitute because it is more difficult to purge, and less well sealed.