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In science and technology, Columbia alumni include: founder of IBM Herman Hollerith ; inventor of FM radio Edwin Armstrong ; inventor of the nuclear submarine Hyman Rickover ; founder of Google China Kai-Fu Lee ; scientists Stephen Jay Gould, Robert Millikan, Helium – neon laser inventor Ali Javan and Michael Pupin ; chief-engineer of the New York City subway William Barclay Parsons ; philosophers Irwin Edman and Robert Nozick ; and economist Milton Friedman

In the summer of 1912, Edwin Armstrong observed oscillations in audion radio receiver circuits and went on to use positive feedback in his invention of the regenerative receiver.

Edwin Howard Armstrong ( 18 December 1890 – 31 January 1954 ) was an American electrical engineer and inventor.

Edwin Howard Armstrong was born in New York City, New York, in 1890.

Edwin Armstrong was buried in Locust Grove Cemetery, Merrimac, Massachusetts.

In addition, Columbia established the Edwin Howard Armstrong Professorship in Computer Science in Armstrong's memory.

* Armstrong Tower — tall lattice tower built and used by Edwin Armstrong in 1938

* IEEE History Center's Edwin H. Armstrong: Excerpt from " The Legacy of Edwin Howard Armstrong ," by J. E. Brittain Proceedings of the IEEE, vol.

* Yannis Tsividis, " Edwin Armstrong: Pioneer of the Airwaves ", 2002.

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