Template:Selected anniversaries/February 25: Difference between revisions
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File:Theodor Svedberg.jpg|link=Theodor Svedberg (nonfiction)|1971: Chemist and academic [[Theodor Svedberg (nonfiction)|Theodor Svedberg]] dies. He was awarded the 1926 Nobel Prize in Chemistry for his pioneering use of analytical ultracentrifugation to distinguish pure proteins from one another. | File:Theodor Svedberg.jpg|link=Theodor Svedberg (nonfiction)|1971: Chemist and academic [[Theodor Svedberg (nonfiction)|Theodor Svedberg]] dies. He was awarded the 1926 Nobel Prize in Chemistry for his pioneering use of analytical ultracentrifugation to distinguish pure proteins from one another. | ||
File:Hugo Steinhaus.jpg|link=Hugo Steinhaus (nonfiction)|1972: Mathematician and academic [[Hugo Steinhaus (nonfiction)|Hugo Steinhaus]] dies. He | File:Hugo Steinhaus.jpg|link=Hugo Steinhaus (nonfiction)|1972: Mathematician and academic [[Hugo Steinhaus (nonfiction)|Hugo Steinhaus]] dies. He discovered mathematician Stefan Banach, with whom he made notable contributions to functional analysis, including the Banach–Steinhaus theorem. | ||
||1976: David Crosthwait dies ... engineer, inventor and writer. Pic search yes: https://www.google.com/search?q=David+Crosthwait | ||1976: David Crosthwait dies ... engineer, inventor and writer. Pic search yes: https://www.google.com/search?q=David+Crosthwait | ||
Revision as of 20:07, 25 February 2020
1598: John Dee demonstrates the solar eclipse by viewing an image through a pinhole. Two versions from Ashmole and Aubrey give different details of who was present. Dee's Diary only contains the notation, "the eclips. A clowdy day, but great darkness about 9 1/2 maine".
1836: Samuel Colt is granted a United States patent for the Colt revolver.
1857: Botanist and chemist Friedrich Reinitzer born. In late 1880s, experimenting with cholesteryl benzoate, Reinitzer discovered the properties of what would later be called liquid crystals; although the discovery attracted attention, interest soon faded as no practical uses were found at the time.
1861: USS Cairo retrofitted with military Gnomon algorithm functions.
1971: Chemist and academic Theodor Svedberg dies. He was awarded the 1926 Nobel Prize in Chemistry for his pioneering use of analytical ultracentrifugation to distinguish pure proteins from one another.
1972: Mathematician and academic Hugo Steinhaus dies. He discovered mathematician Stefan Banach, with whom he made notable contributions to functional analysis, including the Banach–Steinhaus theorem.
1999: Chemist Glenn T. Seaborg dies. He shared the 1951 Nobel Prize in Chemistry for the synthesis, discovery, and investigation of transuranium elements.