Hellenica World


"Great Debate" between H. Shapely and H. Curtis on the nature of spiral galaxies

Saha, ionization equation
Lowenheum-Skolem theorem, Skolem paradox


2 January 1920 Birth of George Howard Herbig

13 January 1920 Birth of Lev Pavlovich Rapoport

16 February 1920 Death of Paul Friedrich Ferdinand Kempf in Potsdam, Germany

11 March 1920 Birth of Nicolaas Bloembergen

26 April 1920 Death of Srinivasa Ramanujan

10 July 1920 Birth of Owen Chamberlain

29 September 1920 Birth of Peter Dennis Mitchell

2 December 1920, Birth of William de Wiveleslie Abney in Folkestone, Kent, England

6 December 1920 Birth of George Porter

1920 Birth of Chusiro Hayashi

1920 Birth of Rosalind (Elsie) Franklin

1920 Birth of Thomas Gold

1920 Birth of Keith R Symon

1920 Birth of Sir John Adams

1920 Birth of Mervyn Hine

1920 Birth of Hugh Hereward


Nobel Prize

Physics to Charles Edouard Guillaume in recognition of the service he has rendered to precision measurements in Physics by his discovery of anomalies in nickel steel alloys.

Chemistry to Walther Hermann Nernst "in recognition of his work in thermochemistry"

Physiology or Medicine to Schack August Steenberg Krogh "for his discovery of the capillary motor regulating mechanism"

Popular Science Aug 1920


1919 - 1920 - 1921