Which Happened First?

Willem Hendrik Keesom

Willem Hendrik Keesom
Image: Unknown photographer · Public domain · source

Willem Hendrik Keesom was a Dutch physicist who, in 1926, invented a method to freeze liquid helium. He also developed the first mathematical description of dipole–dipole interactions in 1921.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

Timeline

  1. Erhard SchmidtJanuary 13, 1876 – December 6, 1959
  2. Harriet BrooksJuly 2, 1876 – April 17, 1933
  3. John James Rickard MacleodSeptember 6, 1876 – March 16, 1935
  4. Walter Sydney AdamsDecember 20, 1876 – May 11, 1956
  5. Willem Hendrik Keesom (this page)June 21, 1876 – March 1956
  6. William Sealy GossetJune 13, 1876 – October 16, 1937

Related

Play a round with Science · 19th century
Willem Hendrik Keesom (June 21, 1876 – March 1956) · Which Happened First?