Harold DeForest Arnold (September 3, 1883 – July 10, 1933) was an electronics engineer and pioneer of radio communication and telephony. He served as the first director of research at Bell Telephone Laboratories from 1925 to his death.
Arnold was born in Woodstock, Connecticut, to Calvin Arnold and Audra Allen. He studied at Wesleyan University for his BS and MS and then studied physics at the University of Chicago for his PhD. He initially studied under Albert A. Michelson but when he confided to Robert Andrews Millikan that he would probably have to commit suicide as he could not meet… More on Wikipedia →
Timeline events (1)
Arnold perfects the vacuum-tube telephone amplifier
