Template:Selected anniversaries/October 24
1601: Astronomer Tycho Brahe dies. Brahe 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. Schickard designed and built calculating machines, and invented techniques for producing improved maps.
1602: Physicist, inventor, and crime-fighter Galileo Galilei uses Tycho Brahe's observatory to detect and prevent crimes against astronomical constants.
1655: Mathematician, astronomer, philosopher, and priest Pierre Gassendi dies. Gassendi 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.
1920: Mathematician and Doctor of Medicine Marcel-Paul Schützenberger born. Schützenberger will contribute to the fields of formal language, combinatorics, and information theory.