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The amount of mercury in a fluorescent lamp varies from 3 to 46 mg, depending on lamp size and age. [4] Newer lamps contain less mercury and the 3–4 mg versions are sold as low-mercury types. A typical 2006-era 4 ft (122 cm) T-12 fluorescent lamp (i.e. F34T12) contains about 5 milligrams of mercury. [5]
Europium oxide (Eu 2 O 3) is widely used as a red phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. [ 51 ] [ 52 ] Color TV screens contain between 0.5 and 1 g of europium oxide. [ 53 ]
Dehua porcelain ink brush holder, with design of carved cranes and lotuses worked into the paste. Late 17th–18th century (Qing dynasty), 9.7 cm (3.8 in) tallDehua porcelain (Chinese: 德化陶瓷; pinyin: Déhuà Táocí; Pe̍h-ōe-jī: Tek-hòe hûi), more traditionally known in the West as Blanc de Chine (French for "White from China"), is a type of white Chinese porcelain, made at Dehua ...
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