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1871 and 1885: Discovery of the phenomenon Rayleigh scattering (which can be used to explain why the sky is blue), and prediction of the existence of surface waves by John Strutt, 3rd Baron Rayleigh (1842–1919). [124] 1897: Discovery of the electron by J. J. Thomson (1856–1940).
Columbus before the Queen, imagined by Emanuel Gottlieb Leutze, 1843. This timeline of European exploration lists major geographic discoveries and other firsts credited to or involving Europeans during the Age of Discovery and the following centuries, between the years AD 1418 and 1957.
In May 1792, American merchant sea captain Robert Gray sailed into the Columbia River, becoming the first recorded American to navigate into it.The voyage, conducted on the privately owned Columbia Rediviva, was eventually used as a basis for the United States' claim on the Pacific Northwest, although its relevance to the claim was disputed by the British.
The apparent plural form in English goes back to the Latin neuter plural mathematica , based on the Greek plural ta mathēmatiká (τὰ μαθηματικά) and means roughly "all things mathematical", although it is plausible that English borrowed only the adjective mathematic(al) and formed the noun mathematics anew, after the pattern of ...
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Exploration is the process of exploring, an activity which has some expectation of discovery.Organised exploration is largely a human activity, but exploratory activity is common to most organisms capable of directed locomotion and the ability to learn, and has been described in, amongst others, social insects foraging behaviour, where feedback from returning individuals affects the activity ...
Mary Elvira Weeks (April 10, 1892 – June 20, 1975) was an American chemist and historian of science. Weeks was the first woman to receive a Ph.D. in chemistry at the University of Kansas and the first woman to be a faculty member there.