Search results
Results From The WOW.Com Content Network
Henry Edward Armstrong FRS [1] FRSE (Hon) (6 May 1848 – 13 July 1937) was a British chemist. Although Armstrong was active in many areas of scientific research, such as the chemistry of naphthalene derivatives, he is remembered today largely for his ideas and work on the teaching of science. Armstrong's acid is named for him. [2]
May 19 – Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior. July 7 – The United States, Russia, the United Kingdom and Japan, meeting in Washington, D.C., sign the North Pacific Fur Seal Convention of 1911, prohibiting open-water seal hunting of the endangered fur seal in the North Pacific Ocean, [2] the ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
1911 Ernest Rutherford explains the Geiger–Marsden experiment by invoking a nuclear atom model and derives the Rutherford cross section; 1911 Ștefan Procopiu measures the magnetic dipole moment of the electron; 1912 Max von Laue suggests using crystal lattices to diffract X-rays; 1912 Walter Friedrich and Paul Knipping diffract X-rays in ...
Armstrong Tools was an American industrial hand tool manufacturer. [1] In its final years, it existed as a brand of Apex Tool Group , LLC and manufactured the majority of its tools in the United States, focusing mostly on aerospace, government, and military users.
In a May 1911 paper, [7] Rutherford presented his own physical model for subatomic structure, as an interpretation for the unexpected experimental results. [2] In it, the atom is made up of a central charge (this is the modern atomic nucleus, though Rutherford did not use the term "nucleus" in his paper). Rutherford only committed himself to a ...
William Ward Armstrong is a Canadian mathematician and computer scientist. He earned his Ph.D. from the University of British Columbia in 1966 and is most known as the originator Armstrong's axioms of dependency in a Relational database .
1911 – Ernest Rutherford: Discovery of the atomic nucleus (Rutherford model) 1911 – Kamerlingh Onnes: Superconductivity; 1912 - Victor Francis Hess: Cosmic rays; 1913 – Niels Bohr: Bohr model of the atom; 1915 – Albert Einstein: General relativity; 1915 – Emmy Noether: Noether's theorem relates symmetries to conservation laws.