Template:Selected anniversaries/January 6: Difference between revisions
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||1731: Étienne François Geoffroy dies ... physician and chemist. Pic. | ||1731: Étienne François Geoffroy dies ... physician and chemist. Pic. | ||
||1745: Jacques-Etienne Montgolfier born ... co-inventor of the hot air balloon. | ||1745: Jacques-Etienne Montgolfier born ... co-inventor of the hot air balloon. Pic. | ||
||1795: Anselme Payen born ... chemist and academic. | ||1795: Anselme Payen born ... chemist and academic. | ||
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||1807: Joseph Petzval dies ... mathematician and physicist. | ||1807: Joseph Petzval dies ... mathematician and physicist. | ||
||1818: Gustav Adolph Kenngott born ... mineralogist. | ||1818: Gustav Adolph Kenngott born ... mineralogist. He was the first to describe enstatite, and the disocverer of a new mineral which he named pisanite in honor of Felice Pisani. Pic. | ||
||1838: Alfred Vail demonstrates a telegraph system using dots and dashes (this is the forerunner of Morse code). | ||1838: Alfred Vail demonstrates a telegraph system using dots and dashes (this is the forerunner of Morse code). | ||
Revision as of 08:53, 7 March 2019
1561: Mathematician and physicist Thomas Fincke born. He will introduce the modern names of the trigonometric functions tangent and secant.
1655: Mathematician Jacob Bernoulli born. He will discover the fundamental mathematical constant e, and make important contributions to the field of probability.
1918: Mathematician and philosopher Georg Cantor dies. He invented set theory, a fundamental area of mathematical inquiry.
1931: Inventor Thomas Edison signs his last patent application.
2016: Violet Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.