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Robert Wilhelm Eberhard Bunsen (German:; 30 March 1811 [a] – 16 August 1899) was a German chemist.He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. [11]
The last two episodes were planned to air on Discovery Channel, but a last-minute schedule change landed them on Science. Exploring Time – A two-hour television documentary miniseries about natural time scale changes; Extreme Smuggling; Futurecar – New technology may be used to create advanced cars and sometimes funny cars in the future.
The dates indicate the true age of the minerals only if the rocks have not been subsequently altered (see rubidium–strontium dating). [ 28 ] [ 29 ] Rubidium-82 , one of the element's non-natural isotopes, is produced by electron-capture decay of strontium-82 with a half-life of 25.36 days.
When We Left Earth: The NASA Missions (or NASA's Greatest Missions: When We Left Earth in the UK) is a 2008 Discovery Channel HD documentary miniseries consisting of six episodes documenting American human spaceflight from the first Mercury flights and the Gemini program, to the Apollo program and its Moon missions and landings, to the Space Shuttle missions and the construction of the ...
Prepared and isolated from urine, it was the first element whose discovery date and discoverer are recorded. [53] Its name first appears in print in the work of Georg Kaspar Kirchmayer in 1676. Recognised as an element by Lavoisier. [1] 1 Hydrogen: 1671 R. Boyle: 1671 R. Boyle Robert Boyle produced it by reacting iron filings with dilute acid.
Name Launch Country Language Content focus Change of content/bias Examples of content in original focus (past and present) Owner/parent company PBS America: 2011
Since the discovery of the New World, various authors have tried to link the Brendan legend with an early discovery of America. In 1977, the voyage was successfully recreated by Tim Severin using a replica of an ancient Irish currach. [146] According to a British myth, Madoc was a prince from Wales who explored the Americas as early as 1170 ...
On September 26, 2021, The American Guest, a four-episode Brazilian miniseries, was released on HBO Latin America and later on HBO Max. The series written by Matthew Chapman and directed by Bruno Barreto follows the expedition of former U.S. president Theodore Roosevelt, played by Aidan Quinn , alongside Brazilian army officer Cândido Rondon ...
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