Template:Selected anniversaries/July 21: Difference between revisions
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||1575: Francesco Maurolico dies (21/22 July 1575) ... mathematician and astronomer. He made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy. Pic. | ||1575: Francesco Maurolico dies (21/22 July 1575) ... mathematician and astronomer. He made contributions to the fields of geometry, optics, conics, mechanics, music, and astronomy. Pic. | ||
||1620: Jean Picard born ... priest and astronomer. Pic: sundial. | |||
File:Giuseppe Piazzi.jpg|link=Giuseppe Piazzi (nonfiction)|1766: Priest, mathematician, and astronomer [[Giuseppe Piazzi (nonfiction)|Giuseppe Piazzi]] uses [[Gnomon algorithm]] techniques to forecast the theoretical existence of the dwarf planet Ceres. | File:Giuseppe Piazzi.jpg|link=Giuseppe Piazzi (nonfiction)|1766: Priest, mathematician, and astronomer [[Giuseppe Piazzi (nonfiction)|Giuseppe Piazzi]] uses [[Gnomon algorithm]] techniques to forecast the theoretical existence of the dwarf planet Ceres. | ||
Revision as of 13:20, 28 March 2019
1766: Priest, mathematician, and astronomer Giuseppe Piazzi uses Gnomon algorithm techniques to forecast the theoretical existence of the dwarf planet Ceres.
1810: Chemist and physicist Henri Victor Regnault born. He will be an early thermodynamicist, best known for his careful measurements of the thermal properties of gases, and for mentoring William Thomson in the late 1840s.
1910: Physicist John Ambrose Fleming delivers lecture from within giant novelty Fleming tube.
1911: Professor of English and philosopher of communication theory Marshall McLuhan born. He will coin the expressions "the medium is the message" and "global village".
2016: Synthetic organism Ultravore begins consuming radioactive chemical waste at the Hanford Site.
2018: Dragons Fighting voted Pictire of the Day by the citizens of New Minneapolis, Canada.