Martin Lewis Perl (b. June 24, 1927) is an American physicist, who won the Nobel Prize in Physics in 1995 for his discovery of the tauon. June 24 is the 175th day of the year (176th in leap years) in the Gregorian Calendar, with 190 days remaining. ... 1927 was a common year starting on Saturday (link will take you to calendar). ... List of Nobel Prize laureates in Physics from 1901 to the present day. ... 1995 was a common year starting on Sunday of the Gregorian calendar. ... The tauon (or tau lepton) is a negatively charged elementary particle with a lifetime of 3×10−13 seconds and a high mass of 1777 MeV (compared to 939 MeV for protons and 0. ...

• the discovery of the tau lepton. (http://eraserall.bravehost.com/jokl/perl-autobio.html)