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The Elgin National Watch Company, commonly known as Elgin Watch Company, was a major US watch maker from 1864 to 1968. The company sold watches under the names Elgin, Lord Elgin, and Lady Elgin. For nearly 100 years, the company's manufacturing complex in Elgin, Illinois, was the world's largest site dedicated to watchmaking. [1]
So a ±1 °C temperature deviation will account for a (±1) 2 × −0.035 ppm = −0.035 ppm rate change, which is equivalent to −1.1 seconds per year. If, instead, the crystal experiences a ±10 °C temperature deviation, then the rate change will be (±10) 2 × −0.035 ppm = −3.5 ppm, which is equivalent to −110 seconds per year.
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25th anniversary: silver; 40th anniversary: ruby; 50th anniversary: gold; 60th anniversary: diamond; 70th anniversary: platinum; In English-speaking countries, the fifth-year gift (wood) was cut on the day of celebration and then presented to the wife as a finished item before the next two quarter days had passed. [citation needed]
The sovereign is a British gold coin with a nominal value of one pound sterling (£1) and contains 0.2354 troy ounces (113.0 gr; 7.32 g) of pure gold.Struck since 1817, it was originally a circulating coin that was accepted in Britain and elsewhere in the world; it is now a bullion coin and is sometimes mounted in jewellery.
The first guinea was produced on 6 February 1663 (361 years ago) (); a proclamation of 27 March 1663 made the coins legal currency.One troy pound of 11 ⁄ 12 (0.9133) [citation needed] fine gold (22 carat or 0.9167 pure by weight) would make 44 + 1 ⁄ 2 guineas, [5] each thus theoretically weighing 129.438 grains (8.385 grams crown gold, 7.688 grams fine gold, or 0.247191011 ozt (troy ounces ...
Opened in 1881 at a cost of $4,272,268.53 ($135 million in 2023), [3] the station was expanded in the early 1890s by famed Philadelphia architect Frank Furness. For most of its existence it was, with City Hall, one of the crown jewels of Philadelphia's architecture, and until a 1923 fire, had the largest train shed in the world (a 91 m span).
The Klondike Gold Rush [n 1] was a migration by an estimated 100,000 prospectors to the Klondike region of Yukon in northwestern Canada, between 1896 and 1899. Gold was discovered there by local miners on August 16, 1896; when news reached Seattle and San Francisco the following year, it triggered a stampede of prospectors. Some became wealthy ...