Today’s Entertainment
Take half an hour and watch this 1940 Western Electric film on the development and role of vacuum tubes forwarded by CVRS Member, Sherod Crowell.
https://techchannel.att.com/
Take half an hour and watch this 1940 Western Electric film on the development and role of vacuum tubes forwarded by CVRS Member, Sherod Crowell.
https://techchannel.att.com/