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Californium is a silvery-white actinide metal [12] with a melting point of 900 ± 30 °C (1,650 ± 50 °F) and an estimated boiling point of 1,743 K (1,470 °C; 2,680 °F). [13] The pure metal is malleable and is easily cut with a knife. Californium metal starts to vaporize above 300 °C (570 °F) when exposed to a vacuum. [14]
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 February 2025. American pioneer who discovered gold in California in 1848 For other people named James W. Marshall, see James W. Marshall (disambiguation). This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced ...
A worker constructing the mill, James W. Marshall, found gold there in 1848. This discovery set off the California gold rush (1848–1855), a major event in the history of the United States. The mill was later reconstructed in the original design and today forms part of Marshall Gold Discovery State Historic Park in Coloma, California.
They discovered caesium by its two blue emission lines in a sample of Dürkheim mineral water. [130] The pure metal was eventually isolated in 1882 by Setterberg. [131] 37 Rubidium: 1861 R. Bunsen and G. R. Kirchhoff: 1863 R. Bunsen
The California gold rush (1848–1855) began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. [1] The news of gold brought approximately 300,000 people to California from the rest of the United States and abroad. [ 2 ]
Salt water can wreck a fire, ... and it can damage metal equipment, including critical equipment in water dumping planes and fire pumps. ... Found a solution to fires in California It’s called ...
Nevada is commonly called the "Silver State" because of the silver produced from the Comstock Lode. However, since 1878, Nevada has been a relatively minor silver producer, with most subsequent bonanzas consisting of more gold than silver. In 1900, Jim Butler discovered Nevada's second largest silver strike in Tonopah, Nevada. Nevada is ...
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