2015 Event AT&T will be replaced with Apple Inc. on the Dow Jones Industrial Average (DJIA), reflecting shifts in the U.S. economy between telecommunications and technology; AT&T had been part of the DJIA for over 100 years 1929 Birthday Amar Bose, born in Philadelphia, Pennsylvania, electrical engineer, Ph.D. from MIT, founder, chairman, Bose Corporation, patented dominantly reflecting sound field mimicking listening space of the audience in a concert hall 1682 Birthday John Hadley, mathematician/inventor, 1st reflecting telescope 1608 Event Prototype of modern reflecting telescope completed by Jan Lippershey
