Stanislao Cannizzaro
Italian chemist, Avogadro’s principle proponent
Italian chemist, Avogadro’s principle proponent
1826
199 years ago
Scientists & Innovators
Italy
A prominent chemist contributed significantly to the field of atomic theory and molecular weights. Cannizzaro established the Cannizzaro reaction, which allows for the synthesis of aldehydes from alkali metal salts of carboxylic acids. Participated in the 1860 Karlsruhe Congress, where principles of atomic weight were discussed. Cannizzaro’s work helped clarify the importance of both atomic and molecular weights for chemical sciences and provided a basis for subsequent developments in chemistry.
Published a pivotal paper on atomic weights
Developed the Cannizzaro reaction
A prominent painter and illustrator, this individual gained recognition for impactful fantasy artwork that defined the genre. Early artistic endeavors included comic book illustrations, contributing to characters in the 1940s and 1950s. The portfolio expanded to include iconic fantasy book covers, notably for the 'Conan the Barbarian' series. Art style integrated dramatic compositions and vivid colors, influencing many contemporary artists. Frazetta's work extended to movie poster art and gallery exhibitions, further cementing a legacy within the fantasy art community.
Continue ReadingActive in the early 20th century, this artist contributed significantly to the Russian avant-garde movement. He was a key figure in developing the Rayonism art style, which emphasized light and color using dynamic forms and abstract shapes. Alongside painting, involvement in set design for theater included work with the celebrated director Vsevolod Meyerhold. The artist's works were featured in various exhibitions both in Russia and internationally, reflecting a blend of traditional Russian elements with modernist techniques.
Continue ReadingBorn in 1725, served as a French general during the American Revolutionary War. Commanded French forces that aided the Thirteen Colonies in their struggle against British rule. Played a crucial role in the Siege of Yorktown, contributing to the decisive victory over British General Cornwallis in 1781. Worked closely with General George Washington, strengthening the alliance between France and America. After the war, returned to France, where he continued to serve in the military until retirement.
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