Template:Selected anniversaries/April 27: Difference between revisions

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||1981 – Xerox PARC introduces the computer mouse.
||1981 – Xerox PARC introduces the computer mouse.


||Gerard Kitchen O'Neill (d. April 27, 1992) was an American physicist and space activist. As a faculty member of Princeton University, he invented a device called the particle storage ring for high-energy physics experiments. Later, he invented a magnetic launcher called the mass driver. In the 1970s, he developed a plan to build human settlements in outer space, including a space habitat design known as the O'Neill cylinder. Pic.
File:Gerard_O'Neill.gif|link=Gerard Kitchen O'Neill (nonfiction)|1992: Physicist and space activist [[Gerard Kitchen O'Neill (nonfiction)|Gerard Kitchen O'Neill]] dies. He invented the particle storage ring and the mass driver. In the 1970s he developed a plan to build human settlements in outer space.  


||Cyrus Derman (d. April 27, 2011) was an American mathematician and amateur musician who did research in Markov decision process, stochastic processes, operations research, statistics and a variety of other fields. Pic.
||Cyrus Derman (d. April 27, 2011) was an American mathematician and amateur musician who did research in Markov decision process, stochastic processes, operations research, statistics and a variety of other fields. Pic.

Revision as of 19:45, 26 April 2018