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Early models of key finder were sound-based, and listened for a clap or whistle (or a sequence of same), then beeped for the user to find them. Determining what was a clap or a whistle proved difficult, resulting in poor performance and false alarms. Because of this low quality and unreliability, these early key finders were soon discarded and ...
The Betterton–Kroll process can only reduce the bismuth concertation to about 0.01% by mass. [1] If higher purity is required, the Betts Electrolytic process is used. [ 2 ] However, due to the significant energy and equipment requirements of the Betts process, the Betterton–Kroll process is preferable if that high level of purity is not needed.
An extract and symbol key from Kenelm Digby's A Choice Collection of Rare Secrets, 1682. The alchemical magnum opus was sometimes expressed as a series of chemical operations. In cases where these numbered twelve, each could be assigned one of the Zodiac signs as a form of cryptography.
Pewter (/ ˈ p juː t ər /) is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. [1] In the past, it was an alloy of tin and lead , but most modern pewter, in order to prevent lead poisoning , is not made with lead.
The Corrupted Blood debuff being spread among characters in Ironforge, one of World of Warcraft's in-game cities. The Corrupted Blood incident (also known as the World of Warcraft pandemic) [1] [2] took place between September 13 and October 8, 2005, in World of Warcraft, a massively multiplayer online role-playing game (MMORPG) developed by Blizzard Entertainment.
Bismuth was long thought to be non-radioactive, but 209 Bi (its longest lived isotope) actually decays with a half life of 2.01 × 10 19 years or about a factor 10 slower than 180 W. However, due to naturally occurring bismuth being 100% 209 Bi, its specific activity is actually higher than that of natural tungsten at 3 milli-becquerel per ...
In 1753 he proved the chemical element bismuth to be distinct from lead, becoming the official discoverer of the element. Before this time, bismuth-containing minerals were frequently misidentified as either lead, tin, or antimony ores. His observations on the matter were published in the Mémoires de l’académie française in 1753. [1] [2]
Arthas Menethil is a fictional character who appears in the Warcraft series of video games and novels by Blizzard Entertainment.He was once a paladin of the Silver Hand and the crown prince of Lordaeron, but he was corrupted by the cursed blade Frostmourne in a bid to save his people.