Template:Selected anniversaries/February 25: Difference between revisions
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File:John Dee.jpg|link=John Dee (nonfiction)|1598: [[John Dee (nonfiction)|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". | File:John Dee.jpg|link=John Dee (nonfiction)|1598: [[John Dee (nonfiction)|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". | ||
||1670: Maria Margaretha Kirch born ... astronomer, and one of the first famous astronomers of her period due to her writings on the conjunction of the sun with Saturn, Venus, and Jupiter in 1709 and 1712 respectively. Calendar pic. | ||1670: Maria Margaretha Kirch born ... astronomer, and one of the first famous astronomers of her period due to her writings on the conjunction of the sun with Saturn, Venus, and Jupiter in 1709 and 1712 respectively. Calendar pic. | ||
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File:Friedrich Reinitzer.jpg|link=Friedrich Reinitzer (nonfiction)|1857: Botanist and chemist [[Friedrich Reinitzer (nonfiction)|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. | File:Friedrich Reinitzer.jpg|link=Friedrich Reinitzer (nonfiction)|1857: Botanist and chemist [[Friedrich Reinitzer (nonfiction)|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. | ||
||1866: Miners in Calaveras County, California, discover what is now called the Calaveras Skull – human remains that supposedly indicated that man, mastodons, and elephants had co-existed. Pic. | ||1866: Miners in Calaveras County, California, discover what is now called the Calaveras Skull – human remains that supposedly indicated that man, mastodons, and elephants had co-existed. Pic. | ||
Revision as of 11:25, 21 January 2022
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.
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.