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Show Transmits Correct Time IT ''xZ I ' ' :J F Paul Sollenberger, one of the astronomers at the United States Naval observatory ob-servatory at Washington, D. C, Is the man who tells the world when it is noon. The cylinder at which he stands is a chronograph connected with the standard clock, which is kept In a triple vault far underground, where there Is no vibration and no dust, and where the temperature never varies as much as one one-hundredth part of a degree. When the chronograph shows that the standard clock registers 11 :55 a. m., Mr. Sollenberger turns on an electric switch. A transmitting clock, connected with the standard clock, ticks off the seconds over radio and telegraph for the next five minutes. A skip In the ticks gives the signal for noon and sets the clocks of the world. |