Search results - Page 173

… receiving circuit ." The capability to transmit and receive signals at great distances had become a dominant issue with …

… What did survive in the Tesla patent are the methods of signal detection. A number of writers 26 have taken note of … , Aug. 1943 (v. 62), pp. 351-357, ref. at p. 356. 27 " Signaling to Mars - A Problem in Electrical Engineering ," …

… of the large conductivity of seawater. The attenuation of signals propagated from a coast station through seawater to … to propagate ELF (extra-low frequency - 30 to 300 Hz) signals in the earth-ionosphere waveguide. Although signal …

… The simultaneous occurrence of two or more prescribed signals at the input to the device element produced an … from the device element." Although Tesla's patents used AC signals and today's computers use pulsed DC, the basic principle of a prescribed combination of signals producing an output by virtue of their conjoint …

… that for transverse electromagnetic radiation for a 7.80 Hz signal wavelength, λ = 25,000 miles--approximately the … the 0 to 50 Hz range in which calibration of the 30.625 Hz signal is made as a secondary standard to NBS. Table 1 … figure gives approximate relative magnitude of the 30 Hz signal measured at various times, as time averages in …

… used an oscilloscope with an elevated probe and swept the signal generator driving the base of the aerial. We got a … resonant frequency of a quarter-wave monopole. Using the signal generator, the antenna was resonant at 714 kHz. O … waveform. When the switch is tapped shut, the ringing signal is seen on the scope. …

… idea of these disturbances being intelligently controlled signals did not yet present itself to me. "The changes I … planet to another. A purpose was behind these electrical signals." Decades later on his birthday in 1937, he … about Tesla's belief that he had listened in on alien radio signals? Perhaps the truth has been kept secret. 13 …