Template:Selected anniversaries/April 18: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 13: | Line 13: | ||
||Julius Wolff (b. 18 April 1882) was a Dutch mathematician, known for the Denjoy–Wolff theorem and for his boundary version of the Schwarz lemma. | ||Julius Wolff (b. 18 April 1882) was a Dutch mathematician, known for the Denjoy–Wolff theorem and for his boundary version of the Schwarz lemma. | ||
||Julius Edgar Lilienfeld (b. April 18, 1882) was a Jewish Austro-Hungarian-born German-American physicist and electronic engineer, credited with the first patents on the field-effect transistor (FET) (1925) and electrolytic capacitor (1931). | |||
||1892 – Eugene Houdry, French-American mechanical engineer and inventor (d. 1962) | ||1892 – Eugene Houdry, French-American mechanical engineer and inventor (d. 1962) | ||
Revision as of 17:24, 26 March 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.