Ralph Hartley

Ralph Vinton Lyon Hartley was an American electronics researcher. He invented the Hartley oscillator and the Hartley transform, and contributed to the foundations of information theory.

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

Who was born first?

• Ralph Hartley and John Logie Baird were born the same year
• Ralph Hartley and Frits Zernike were born the same year
• Ralph Hartley and W. O. Bentley were born the same year
• Ralph Hartley and Jakow Trachtenberg were born the same year
• Ralph Hartley was born 1 year after Elisa Leonida Zamfirescu

Timeline

1. Elisa Leonida ZamfirescuNovember 10, 1887 – November 25, 1973
2. Frits ZernikeJuly 16, 1888 – March 10, 1966
3. Jakow TrachtenbergJune 17, 1888 – October 26, 1951
4. John Logie BairdAugust 13, 1888 – June 14, 1946
5. Ralph Hartley (this page)November 30, 1888 – May 1, 1970
6. W. O. BentleySeptember 16, 1888 – August 13, 1971

Related

• Albert EinsteinMarch 14, 1879 – April 18, 1955
• Leonardo da VinciApril 15, 1452 – May 2, 1519
• Galileo GalileiFebruary 15, 1564 – January 8, 1642
• Thomas EdisonFebruary 11, 1847 – October 18, 1931
• Archimedescirca 287 BC – 212 BC
• Steve JobsFebruary 24, 1955 – October 5, 2011
• Nikola TeslaJuly 10, 1856 – January 7, 1943
• Henry FordJuly 30, 1863 – April 7, 1947