Ruby Puryear Hearn, African-American biophysicist
Ruby Louise Puryear Hearn (born April 13, 1940) is an American biophysicist who has dedicated her career to health policy. Her work spans initiatives in maternal, infant, and child health; AIDS; substance abuse; and minority medical education.

1940Apr, 13
Ruby Puryear Hearn
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Events on 1940
- 17May
Brussels
World War II: Germany occupies Brussels, Belgium. - 12Jun
Erwin Rommel
World War II: Thirteen thousand British and French troops surrender to Major General Erwin Rommel at Saint-Valery-en-Caux. - 5Jul
Vichy France
World War II: The United Kingdom and the Vichy France government break off diplomatic relations. - 10Jul
Vichy France
World War II: The Vichy government is established in France. - 11Jul
Vichy France
World War II: Vichy France regime is formally established. Philippe Pétain becomes Prime Minister of France.