Page:Popular Science Monthly Volume 22.djvu/344

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



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