Template:Selected anniversaries/June 19: Difference between revisions
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||1869: Ernst Waldemar Jungner born ... inventor and engineer. In 1899 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd) and the rechargeable alkaline silver-cadmium battery (AgCd). As an inventor he also fabricated a fire alarm based on different dilutions of metals. He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device. Pic. | ||1869: Ernst Waldemar Jungner born ... inventor and engineer. In 1899 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd) and the rechargeable alkaline silver-cadmium battery (AgCd). As an inventor he also fabricated a fire alarm based on different dilutions of metals. He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device. Pic. | ||
||1874: Peder Oluf Pedersen | ||1874: Peder Oluf Pedersen born ... physicist and engineer. | ||
||1876: Nigel Gresley | ||1876: Nigel Gresley born ... engineer. | ||
||1894: Lloyd Hall | ||1894: Lloyd Hall born ... chemist and inventor. | ||
||1897: Cyril Norman Hinshelwood | ||1897: Cyril Norman Hinshelwood born ... chemist and academic, Nobel Prize laureate | ||
||1899: Eugen Cornelius Joseph von Lommel dies ... physicist. He is notable for the Lommel polynomial, the Lommel function, the Lommel–Weber function, and the Lommel differential equation. Pic. | ||1899: Eugen Cornelius Joseph von Lommel dies ... physicist. He is notable for the Lommel polynomial, the Lommel function, the Lommel–Weber function, and the Lommel differential equation. Pic. | ||
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||1956: Operation Mosaic was a series of two British nuclear tests conducted in the Monte Bello Islands in Western Australia on 16 May and 19 June 1956. Pic. | ||1956: Operation Mosaic was a series of two British nuclear tests conducted in the Monte Bello Islands in Western Australia on 16 May and 19 June 1956. Pic. | ||
||1975: Sam Giancana dies ... mob boss | ||1975: Sam Giancana dies ... mob boss. Pic. | ||
||1988: Fernand Seguin dies ... biochemist and academic. | ||1988: Fernand Seguin dies ... biochemist and academic. | ||
||2004: 99942 Apophis discovered ... a 370 meter diameter near-Earth asteroid that caused a brief period of concern in December 2004 because initial observations indicated a probability of up to 2.7% that it would hit Earth on April 13, 2029. Additional observations provided improved predictions that eliminated the possibility of an impact on Earth or the Moon in 2029. | |||
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Revision as of 16:15, 9 March 2019
1623: Mathematician, physicist, inventor, writer, and Christian philosopher Blaise Pascal born. He will do pioneering work on calculating machines.
1624: Physician, mathematician, and crime-fighter Joseph Solomon Delmedigo publishes new class of Gnomon algorithm functions which detect and banishes demons.
1771: Mathematician and logician Joseph Diez Gergonne born. He will contribute to the principle of duality in projective geometry, by noticing that every theorem in the plane connecting points and lines corresponds to another theorem in which points and lines are interchanged, provided that the theorem embodied no metrical notions.
1795: Surgeon and gentleman scientist James Braid born. He will be an important and influential pioneer of hypnotism and hypnotherapy.
1858: Scientist and inventor Johann Philipp Reis publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1865: Asclepius Myrmidon Prepares for Emergency Field Surgery wins Pulitzer Prize for Most Heroic War Illustration of the Year.