"Electrical energy" Quotes from Famous Books
 ... University. De Forest's contribution was a lamp instrument, a three-step audion amplifier. This is to the wireless telephone what the coherer is to the wireless telegraph. It is so delicate that the faintest currents coming through the ether will stimulate it and serve to set in motion local sources of electrical energy so that the waves received are magnified to a point where ...
— Masters of Space - Morse, Thompson, Bell, Marconi, Carty • Walter Kellogg Towers |
