Template:Selected anniversaries/July 15: Difference between revisions

From Gnomon Chronicles
Jump to navigation Jump to search
No edit summary
No edit summary
Line 51: Line 51:


||1930: Stephen Smale born ... American mathematician and computer scientist (Alive Aug. 2018).
||1930: Stephen Smale born ... American mathematician and computer scientist (Alive Aug. 2018).
||1936: Richard Dixon Oldham dies ... seismologist and geologist ... Oldham made the first clear identification of the separate arrivals of P-waves, S-waves and surface waves on seismograms and the first clear evidence that the Earth has a central core. Pic.


||1955: Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others.
||1955: Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others.

Revision as of 08:00, 18 June 2019