Georges Lemaitre

    Image 1 Caption: Georges Lemaitre (1894--1966) circa 1933. See also St. Andrews: MacTutor: Georges Lemaitre (1894--1966).

    Features:

    1. Lemaitre was the co-discoverer of the Friedmann equation (AKA Friedmann-Lemaitre equation and the Friedmann equation (FE) models and the inventor in 1931 of the primeval atom theory. The primeval atom theory is now only of historical interest, but it is the theoretical ancestor of Big Bang cosmology (see No-525,530; Jean-Pierre Luminet, The Rise of Big Bang Models (4) : Lemaitre, 2015).

    2. Yours truly does NOT know what Lemaitre is doing on that rather weird looking blackboard. Actually, it looks like he's chalking on wood panelling---yikes.

      Millikan, Lemaitre, Einstein

    3. Image 2 Caption: Georges Lemaitre (1894--1966) between Robert Millikan (1868--1953) and Albert Einstein (1879--1955) at Caltech, 1933 Jan10.

    4. Georges Lemaitre (1894--1966) videos (i.e., Georges Lemaitre (1894--1966) videos):
      1. Georges Lemaitre y la teoria del Big Bang | 1:30: Great---and in Spanish. Not suitable for the classroom.
      2. Au-dela du Big Bang 3 | 19:54: Scroll to 9:50 for Georges Lemaitre (1894--1966) et un lecon en francais. Not suitable for the classroom.
      3. (Lost Media) Interview with Georges Lemaitre (1964)| 19:47: Georges Lemaitre (1894--1966), the Master (it's his name), speaks to us from across the centuries---prospectively speaking. And with Flemish subtitles. See also Gontcho et al. 2023, "Resurfaced 1964 VRT video interview of Georges Lemaitre". NOT suitable for the classroom.
      4. Editorial note to "The beginning of the world from the point of view of quantum theory": Jean-Pierre Luminet 2011, May31, 16 pages: Popular: On Georges Lemaitre (1894--1966) and the Lemaitre universe and the primeval atom. For corrections, see Livio 2011 on Hubble's law omission and O'Raifeartaigh, 2019, p. 13 on dark energy and its negative pressure first use. See also Jeffery 2023, p. 43 for the radiation Lemaitre universe exact solution. / keywords_cosmology.html

    Images:
    1. Credit/Permission: Anonymous photographer, circa 1933 / Public domain very probably.
      Image link: Universite Catholique de Louvain: Georges Lemaitre Archives.
    2. Credit/Permission: Anonymous photographer, 1933 / Public domain very probably.
      Image link: Universite Catholique de Louvain: Georges Lemaitre Archives.
    Local file: local link: georges_lemaitre.html.
    File: Astronomer file: georges_lemaitre.html.