… to as 'electrical actions which definitely appeared to be signals.' The changes were taking place periodically and … of one planet to another. Faint and uncertain as these signals were, they have given me a deep conviction and …
… oscillator to fm = 3.75 Hz. This will produce two signals: f₁ = 5.00375 kHz (i.e., ₁ = 59.955 km) f₂ = 4.99625 … a "museum piece", the empirical formula gives daylight VLF signal strength for ranges of 2,000 to 10,000 km with fair …
… (a tin and lead alloy) or plastic. 3) The propagating signal is not like electrical current since it is coherent. … of the frequency of the information and the propagating signal can be blocked by a DC magnetic field. 4) The …
… as electrooptic transducers by converting an electrical signal to an optical signal. Sources We recall from our first electronics course …
… example is radar, which employs short wavelength radio signals that can be reflected back from solid objects. As … a hose designed to draw water from the river. At the given signal, 16 men applied their muscles to the new, brightly …
… all of which are capable of transmitting individualized signals to the uttermost confines of the earth. Each of them … importance of this first attempt and its effect upon future development, I shall proceed slowly and carefully. …
… certain artifices which I shall make known some time in the future. "We have been offered 10,000-horse power from the … of a number of plants, each of which can transmit signals to all parts of the world, the news of the globe …
… in over their heads. Can the past be rewritten? Is the future etched in stone? Time will tell. This is the exciting …
… much more effectively effects tending to interfere with the signals than has been possible by the means here to fore …
… as may be the case in the transmission of intelligible signals, the circuit A is periodically closed and opened, …