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In the early 1970s, National Foam, Inc. invented alcohol-resistant AFFF technology. AR-AFFF is a synthetic foam developed for both hydrocarbon and polar-solvent materials. Polar solvents are combustible liquids that destroy conventional fire-fighting foam.
1963 The United States Navy scientists began to work with 3M to develop aqueous film-forming foams (AFFF). The US military began to use AFFF since its development in 1963 and patented AFFF in 1967. [22] [23] 1961 A DuPont in-house toxicologist said C8 was toxic and should be "handled with extreme care." [10]
AFFF was developed in the 1960s under Project Light Water in a joint venture between 3M and the U.S. Navy. AFFF forms a film that floats out before the foam blanket, sealing the surface and smothering the fire by excluding oxygen. AFFF is widely used for ARFF firefighting at airports, often in conjunction with purple-K dry chemical.
As of October 2020, YouTube is the second-most popular website in the world, behind Google, according to Alexa Internet. [1] As of May 2019 [update] , more than 500 hours of video content are uploaded to YouTube every minute. [ 2 ]
On July 14, 2022, YouTube made a special playlist and video celebrating the 317 music videos to have hit 1 billion views and joined the "Billion Views Club". [ 65 ] [ 66 ] On April 1, 2024, the communications app Discord incorporated a short trailer video into their in-app April Fools' Day prank regarding loot boxes .
The service is designed with a user interface that allows users to explore songs and music videos on YouTube-based genres, playlists, and recommendations. In April 2023, the service expanded its offerings to include support for podcasts. [2] YouTube Music also features a premium tier that provides several benefits to subscribers.
List of songs in Guitar Hero World Tour; List of songs in Guitar Hero 5; List of songs in Guitar Hero: Warriors of Rock; List of songs in Guitar Hero Live; List of songs in Guitar Hero: Aerosmith; List of songs in Guitar Hero: Metallica; List of songs in Guitar Hero: Van Halen; List of songs in Guitar Hero Encore: Rocks the 80s
AFFF may refer to : Film festivals. Asian Festival of First Films, a former film festival held in Singapore; Imagine Film Festival, formerly Amsterdam Fantastic ...