On This Day

What Happened on July 15, 1940

Day of the Week: Monday

Historical Events

  • 1st betatron placed in operation, Urbana, Illnois
  • Nazi occupiers seize library of IISG Amsterdam
  • Physicist Donald Kerst becomes the first person to accelerate electrons using electromagnetic induction, reaching energies of 2.3 MeV, when his betatron device (for particle acceleration) becomes operational

Famous Deaths

  • Donald Calthrop, British actor (Blackmail, Scrooge, Rome Express), dies from a heart attack at 52
  • Robert Wadlow, world's tallest man (8'11.1"), dies at 32