Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 23, 2025
While one group of scientists had given themselves to experimentation with the Hertzian waves which led to wireless telegraphy, other scientists and engineers were busily engaged in bringing the telephone to a perfection which would enable it to accomplish even more striking feats.
After that are what are known as the ultra-violet rays, which lie beyond the violet of white light. We also have electric waves, the waves of the alternating current, and shorter still we find the Hertzian waves, which are used in wireless.
The eyes of the new ship were set in recesses of the tremendously strong cosmium wall, and over them, protecting them, was an infinitely thin, but infinitely strong wall of artificial matter, permanently maintained. It was opaque to all forms of radiation known from the longest Hertzian to the shortest cosmics, save for the very narrow band of visible light.
I must assume that my readers are familiar with the receiving apparatus of wireless telegraphy, which must be "tuned" by the operator until its own vibratory quality is in exact harmony with the vibrations the extremely rapid impacts of those short electric wavelengths we call Hertzian, and which carry the wireless messages.
The inventor placed it in a box easily carried by a man, including a battery, and mounted on an ordinary camera tripod so that the user might well be taken for a travelling photographer. It is good in one direction only, but I have a signalling-bell here that can be rung from the other end by Hertzian waves. Thank Heaven, it's compact and simple. "O'Connor," he went on, "it is as I told you.
The Hertzian waves were provided without any earth connection and radiated into space in all directions, rapidly losing force like the disappearing ripples on a pond, whereas those set up by a grounded transmitter with the receiving instrument similarly connected to earth, keep within the immediate neighborhood of the earth.
Word Of The Day
Others Looking