Template:Selected anniversaries/April 18: Difference between revisions
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||1813 – James McCune Smith, African-American physician, apothecary, abolitionist, and author (d. 1865) | ||1813 – James McCune Smith, African-American physician, apothecary, abolitionist, and author (d. 1865) | ||
|| | ||Paul-Émile Lecoq de Boisbaudran (b. 18 April 1838), was a French chemist known for his discoveries of the chemical elements gallium, samarium and dysprosium. Pic. | ||
||Gerardus Johannes Mulder (d. 18 April 1880) was a Dutch organic and analytical chemist. Pic. | ||Gerardus Johannes Mulder (d. 18 April 1880) was a Dutch organic and analytical chemist. Pic. | ||
Revision as of 13:29, 1 April 2018
1324: Alleged supernatural healer Malady saves patient from the Black Death, accidentally infects doctor.
1945: Electrical engineer and physicist John Ambrose Fleming dies. He invented the thermionic valve, also known as the vacuum tube.
1955: Physicist, engineer, and academic Albert Einstein dies. He developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).
1963: Vandal Savage Press is front for clandestiphrine manufacturing operation, says crime-fighter John Brunner.