Electronic industries; People; Photographs; San Carlos (Calif.)--History; Technology;
At bottom of black-and-white photographic print: "Eimac employees Naomi Prindle of San Carlos, left, and Bernice Buttacavole, San Mateo, are shown with two Eimac electron-power tubes widely used in military and commercial applications. Eimac...
Electronic industries; People; Photographs; San Carlos (Calif.)--History; Technology;
At bottom of black-and-white photographic print: "Radio frequency power for the lunar echo demonstration between Alaska and San Carlos via the moon was generated by this 3K50,000LA Eimac klystron operating at 10,000 watts power output...
Electronic industries; People; Photographs; San Bruno (Calif.)--History; Technology;
At bottom of black-and-white photographic print: "Eimac super power klystrons are tested in San Bruno, California plant. An Eimac super power klystron was used in the recent Venus radar contact supplying the high radio frequency power. Eimac...
The first radio telephone transmitting and receiving set which was installed on Commodore Huntington's yacht "Thelma" at Put-in-Bay, Ohio in 1907. The audion box on left with pan-cake turner above the large transmitting case was the first...
Mosquini, Mari, 1899-1983; De Forest, Lee, 1873-1961; Paintings; Record Players
Lee de Forest listening to records with his wife Marie knitting socks, in their Hollywood home. The large painting behind them is by Martin Kavel. This painting was awarded the Medaille d'Or at the 1922 Paris Salon, and was purchased at that time...
De Forest, Lee, 1873-1961; Owen, Freeman; Men; Cameras
Written on back of photograph, "Dr. De Forest with his laboratory assistant, Freeman Owen. Dr. De Forest's little tube made possible the recording of sound waves (1923) Phonofilm-Glowlight." Photo shows De Forest and Owen with a tube and...
Young woman seated, reading book. Nearby is a baby carriage rigged with what appears to be an antenna and megaphone. Woman may be Mrs. Charles Herrold.
