Date | Text | |
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30 Nov 1917
![]() Kiyotsugu Hirayama |
Kiyotsugu Hirayama (astronomy) Kiyotsugu Hirayama identifies several groups of main belt asteroids, now known as Hirayama families. |
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30 Nov 1917
![]() Harlow Shapley |
Harlow Shapley (astronomy) Harlow Shapley demonstrates that globular clusters are arranged in a spheroid or halo whose center is not the Earth, but the center of the galaxy. |
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30 Nov 1917
![]() Max Wolf |
Max Wolf (astronomy) Max Wolf discovers the star Wolf 359. |
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30 Nov 1917
![]() Heber Curtis |
Heber Curtis (astronomy) Heber Curtis discovers a relativistic jet of matter emerging from Elliptical galaxy M87. |
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30 Nov 1917
![]() R. A. Fisher |
R. A. Fisher (biology) R. A. Fisher puts forward a genetic model that shows that continuous variation could be the result of Mendelian inheritance in his paper "The Correlation Between Relatives on the Supposition of Mendelian Inheritance". |
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30 Nov 1917
![]() J. Henri Fabre |
J. Henri Fabre (biology) J. Henri Fabre's The Sacred Beetle, and others published in English. |
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30 Nov 1917
![]() Jacques Loeb |
Jacques Loeb (biology) Jacques Loeb's Forced Movements, Tropisms, and Animal Conduct published in the United States. |
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30 Nov 1917
![]() Edward Hugh Hebern |
Edward Hugh Hebern (cryptography) Edward Hugh Hebern patents the Hebern rotor machine. |
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30 Nov 1917
![]() Technisches Museum Wien |
Technisches Museum Wien (history of science) Technisches Museum Wien opens in Vienna. |
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30 Nov 1917
![]() Felix Hausdorff |
Felix Hausdorff (mathematics) Felix Hausdorff introduces the concept of the fractional Hausdorff dimension. |
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30 Nov 1917
![]() Gaston Julia |
Gaston Julia (mathematics) Gaston Julia describes the iteration of a rational function. |
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30 Nov 1917
![]() Josef Lense |
Josef Lense (physics) Josef Lense and Hans Thirring find the gravitomagnetic precession of gyroscopes in the equations of general relativity. |
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30 Nov 1917
![]() Hans Reissner |
Hans Reissner (physics) Hans Reissner and Gunnar Nordström solve the Einstein and Maxwell field equations for charged spherically-symmetric non-rotating systems. |
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30 Nov 1917
![]() Friedrich Kottler |
Friedrich Kottler (physics) Friedrich Kottler gets Schwarzschild solution without Einstein vacuum field equations. |
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30 Nov 1917
![]() Hartog Jacob Hamburger |
Hartog Jacob Hamburger (physiology and medic) Hartog Jacob Hamburger describes the chloride shift. |
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30 Nov 1917
![]() Edwin Armstrong |
Edwin Armstrong (technology) Edwin Armstrong invents the superheterodyne receiver. |
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30 Nov 1917
![]() Theodore von Karman |
Theodore von Karman (technology) Theodore von Karman and Asbóth Oszkár build the first co-axial helicopter. |
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30 Nov 1917
![]() A. M. Nicolson |
A. M. Nicolson (technology) A. M. Nicolson invents the radio crystal oscillator |
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30 Nov 1917
![]() Charles Strite |
Charles Strite (technology) Charles Strite invents the pop-up toaster. |