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2. Salt water chlorination - Wikipedia

   en.wikipedia.org/wiki/Salt_water_chlorination

   Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

3. Fiberglass - Wikipedia

   en.wikipedia.org/wiki/Fiberglass

   Glass fibers have been produced for centuries, but the earliest patent was awarded to the Prussian inventor Hermann Hammesfahr (1845–1914) in the U.S. in 1880. [3] [4]Mass production of glass strands was accidentally discovered in 1932 when Games Slayter, a researcher at Owens-Illinois, directed a jet of compressed air at a stream of molten glass and produced fibers.

4. Pool - Wikipedia

   en.wikipedia.org/wiki/Pool

   Pool (cue sports), a group of games played on a pool table; Pool (poker) or pot (poker), money wagered during a single hand of poker; Pool betting or parimutuel betting, a betting system in which all bets of a particular type are placed together Betting pool, a form of pool betting where gamblers pay a fixed price into a pool

5. Swimming pool - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool

   This is an accepted version of this page This is the latest accepted revision, reviewed on 15 December 2024. Artificial water basin for swimming For other uses, see Swimming pool (disambiguation). Backyard swimming pool Olympic-size swimming pool and starting blocks at Melbourne Sports and Aquatic Centre used for the 2006 Commonwealth Games in Melbourne, Australia A swimming pool, swimming ...

6. Analytical balance - Wikipedia

   en.wikipedia.org/wiki/Analytical_balance

   An analytical balance (or chemical balance) is a class of balance designed to measure small mass in the sub-milligram range. The measuring pan of an analytical balance (0.1 mg resolution or better) is inside a transparent enclosure with doors so that dust does not collect and so any air currents in the room do not affect the balance's operation ...

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