Template:Selected anniversaries/October 24: Difference between revisions
No edit summary |
No edit summary |
||
Line 23: | Line 23: | ||
||1830: Marianne North born ... biologist and painter. | ||1830: Marianne North born ... biologist and painter. | ||
||1847: James MacCullagh dies ... mathematician. His most important paper on optics, entitled "An essay towards a dynamical theory of crystalline reflection and refraction", describes a potential function for a dynamical theory for the transmission of light. MacCullagh found that a conventional potential function proportional to the squared norm of the displacement field was incompatible with known properties of light waves. In order to support only transverse waves, he found that the potential function must be proportional to the squared norm of the curl of the displacement field. No birth date. Pic. | |||
||1853: Heinrich Maschke born ... mathematician who proved Maschke's theorem. Pic. | ||1853: Heinrich Maschke born ... mathematician who proved Maschke's theorem. Pic. |
Revision as of 07:45, 10 October 2018
1601: Astronomer Tycho Brahe dies. He made astronomical observations some five times more accurate than the best available observations at the time.
1635: Minister, scholar, astronomer, mathematician, cartographer, and inventor Wilhelm Schickard dies. He design and built calculating machines, and invented techniques for producing improved maps.
1602: Physicist, inventor, and crime-fighter Galileo Galilei uses Tycho Brahe's astronomical observations to detect and prevent crimes against mathematical constants.
1646: Physicist, mathematician, and crime-fighter Evangelista Torricelli his "barometer of the indivisibles", which uses quantum pressure to detect and prevent crimes against physics.
1655: Mathematician, astronomer, philosopher, and priest Pierre Gassendi dies. He clashed with his contemporary Descartes on the possibility of certain knowledge.
1676: Isaac Newton summarized the state of development of his method of fluxions and power series in the "Epistola posterior," which he sent to Oldenburg to transmit to Leibniz.
1861: The first transcontinental telegraph line across the United States is completed.
2015: Steganographic analysis of Asclepius Myrmidon Spear Charge reveals two terabytes of encrypted data.