Template:Selected anniversaries/May 7: Difference between revisions

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||Oskar Perron (b. 7 May 1880) was a German mathematician. He made numerous contributions to differential equations and partial differential equations, including the Perron method to solve the Dirichlet problem for elliptic partial differential equations. Pic.
||Oskar Perron (b. 7 May 1880) was a German mathematician. He made numerous contributions to differential equations and partial differential equations, including the Perron method to solve the Dirichlet problem for elliptic partial differential equations. Pic.
||1890: James Nasmyth dies ... engineer who invented the steam-hammer (24 Nov 1839) which was patented in Britain on 9 Jun 1842 (No. 9382). In his early career, Nasmyth improved the design of machine tools. Power hammers had previously been driven by steam, but Nasmyth designed his steam-hammer with more precision and control. The steam functioned to lift the hammer which then dropped by gravity, and repeated the cycle. Nasmyth adapted the idea to make a steam pile-driver. With later improvements, the steam-hammer enabled forging very large guns for the British navy. He became wealthy and in 1856 was able to retire at the age of 48. After retirement, Nasmyth pursued his hobby of astronomy, in which he published minor works. Pic.


File:Alexander Stepanovich Popov.jpg|link=Alexander Stepanovich Popov (nonfiction)|1895: Russian physicist [[Alexander Stepanovich Popov (nonfiction)|Alexander Stepanovich Popov]] demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver.
File:Alexander Stepanovich Popov.jpg|link=Alexander Stepanovich Popov (nonfiction)|1895: Russian physicist [[Alexander Stepanovich Popov (nonfiction)|Alexander Stepanovich Popov]] demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver.

Revision as of 17:01, 15 August 2018

  • 1794: Chemist, aristocrat, and crime-fighter Antoine Lavoisier publishes his groundbreaking treatise on crimes against chemical constants, introducing nomenclature and terminology used to this day.

    1794: Chemist, aristocrat, and crime-fighter Antoine Lavoisier publishes his groundbreaking treatise on crimes against chemical constants, introducing nomenclature and terminology used to this day.

  • 1794: French Revolution: Robespierre introduces the Cult of the Supreme Being in the National Convention as the new state religion of the French First Republic.

    1794: French Revolution: Robespierre introduces the Cult of the Supreme Being in the National Convention as the new state religion of the French First Republic.

  • 1832: Mathematician Carl Gottfried Neumann born. He will study physics with his father, and later work as a mathematician, dealing almost exclusively with problems arising from physics.

    1832: Mathematician Carl Gottfried Neumann born. He will study physics with his father, and later work as a mathematician, dealing almost exclusively with problems arising from physics.

  • 1860: Electrical engineer and inventor Oliver Blackburn Shallenberger born. He will invent the first successful alternating current electrical meter, which will be critical to the general acceptance of AC power.

    1860: Electrical engineer and inventor Oliver Blackburn Shallenberger born. He will invent the first successful alternating current electrical meter, which will be critical to the general acceptance of AC power.

  • 1895: Russian physicist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver.

    1895: Russian physicist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver.

  • 1895: Mathematician and alleged immortal John Havelock purchases signed first edition of The Time Machine, telling author H. G. Wells that the book "is an instant classic."

    1895: Mathematician and alleged immortal John Havelock purchases signed first edition of The Time Machine, telling author H. G. Wells that the book "is an instant classic."

  • 1895: First publication of The Time Machine by H. G. Wells.

    1895: First publication of The Time Machine by H. G. Wells.

  • 1896: Serial killer H. H. Holmes is executed for the murder of his friend and accomplice Benjamin Pitezel.

    1896: Serial killer H. H. Holmes is executed for the murder of his friend and accomplice Benjamin Pitezel.

  • 1960: Film director and arms dealer Egon Rhodomunde raises funds for new film about the American U-2 pilot Gary Powers.

    1960: Film director and arms dealer Egon Rhodomunde raises funds for new film about the American U-2 pilot Gary Powers.

  • 1960: Cold War: U-2 Crisis of 1960: Soviet leader Nikita Khrushchev announces that his nation is holding American U-2 pilot Gary Powers.

    1960: Cold War: U-2 Crisis of 1960: Soviet leader Nikita Khrushchev announces that his nation is holding American U-2 pilot Gary Powers.

  • 1960: Actor-cryptographer Niles Cartouchian meets privately with Nikita Khrushchev and Gary Powers in a successful attempt to avoid nuclear war.

    1960: Actor-cryptographer Niles Cartouchian meets privately with Nikita Khrushchev and Gary Powers in a successful attempt to avoid nuclear war.

  • 2018: Three Kings declared Picture of the Day by the citizens of New Minneapolis, Canada.

    2018: Three Kings declared Picture of the Day by the citizens of New Minneapolis, Canada.

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