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A violet smoke grenade used to mark a helicopter landing zone during the Vietnam War, 1967 Smoke grenades used to create a smoke screen during protest demonstrations in Paris, 2008. Smoke grenades are used for several purposes. The primary use is the creation of smoke screens for concealment and the signaling of aircraft.
A smoke screen is smoke released to mask the movement or location of military units such as infantry, tanks, aircraft, or ships. Smoke screens are commonly deployed either by a canister (such as a grenade ) or generated by a vehicle (such as a tank or a warship ).
Palais Royale, a 1988 Canadian film released under the alternative titles Smokescreen or Smoke Screen; Security smoke, generated smoke specifically used as a security measure; Smoke screen, smoke released as a military countermeasure to hide weapons, other equipment, or infantry; Smokescreen, a non-damaging Normal-type move in the Pokémon series
Film historians Steve Chibnall and Brian McFarlane selected Smokescreen as one of the 15 most meritorious British B films made between the Second World War and 1970. They describe it as an "uncommonly neat little insurance racket-cum-murder thriller" and praise the way that its comic relief is "built into the fabric of the film's main narrative ...
The caterpillar of the eyed hawk-moth Smerinthus ocellatus is camouflaged to match a leafy background in both visible and infra-red light.. The English zoologist Hugh Cott, in his 1940 book Adaptive Coloration in Animals, wrote that some caterpillars such as the eyed hawk-moth Smerinthus ocellatus, and tree frogs such as the red-snouted treefrog Hyla coerulea, are coloured so as to blend with ...
"Clear backpacks are not fixing the problem — it's just putting a Band-Aid on it," she says. Wellness, parenting, body image and more: Get to know the who behind the hoo with Yahoo Life's ...
The M18 was developed in 1942 during World War II and was completed in November of that year. It was designed to replace the M16 smoke grenade, which did not burn as long or as vividly.
Smoke with a suitable composition can be used as a fire suppression agent.A pyrotechnic composition similar to black powder, composed of 15% charcoal and 85% potassium nitrate, generates thick smoke composed of particles of mainly potassium carbonate, which has fire extinguishing properties.