Page:Popular Science Monthly Volume 22.djvu/344

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ready to receive the time-signals. The electrical working of the apparatus which accomplishes this will be understood by reference to Fig. 8.[1] Under normal conditions, the current from the observatory passes

PSM V22 D344 The chronopher viewed in elevation.jpg

directly through the chronopher, and out at the galvanometer G', to the tower-clock at the Houses of Parliament, "Westminster. This clock has a gravity escapement, and a metallic compensating pendulum, very similar to the pendulum of the Sidereal Standard, already described, and runs with a rate of less than one second per week. The

  1. The small figures 1, 2, 3, 4, to the right of Fig. 8 and to the left of Fig. 9, show the connection between the wires.