American scientist known for having designed the Global Positioning System (GPS).
Roger L. Easton was born on 30 April, 1921
Today's Events: 20 May
-
HIV discovery published
-
Cosmic microwave background radiation discovered
-
First Baskin-Robbins franchise
-
Amelia Earhart starts on her transatlantic flight
-
First non-stop solo flight across the Atlantic by Charles Lindbergh
-
Saturday Evening Post publishes first cover with Norman Rockwell painting
-
First traffic ticket in US
-
First public display of prototype of Thomas Edison kinetoscope
-
Metre Convention held to establish International System of Units
-
Levi Strauss and Jacob Davis receive patent for blue jeans with copper rivets
-
Martin Honeysett Birthday
-
Dieter Rams Birthday
-
William Hewlett Birthday
-
Gardner Fox Birthday
-
Emile Berliner Birthday
-
Sir William Congreve Birthday
-
Eugene Polley Death Anniversary
-
Christopher Columbus Death Anniversary