Apr. 04, 2012 - First Radio Clock 22.1.53. Mr. S.J. Smith, a development of a South London firm, this evening showed the first clock controlled by radiated time signals. Smith, in his 70's, invented the clock; it is an apparatus controlled by Tim, the Post Office clock, and by signals every second from the Rugby wireless station. The clock's accuracy is absolute. If the pendulum is out of phase by one thousandth of a second the radio signal will bring it to order. Clockmarkers expect to see radio controlled clocks in use in railway stations, factories and Post Offices

- Image ID: E144BJ
Keystone Press / Alamy Stock Photo
Image ID: E144BJ
Apr. 04, 2012 - First Radio Clock 22.1.53. Mr. S.J. Smith, a development of a South London firm, this evening showed the first clock controlled by radiated time signals. Smith, in his 70’s, invented the clock; it is an apparatus controlled by Tim, the Post Office clock, and by signals every second from the Rugby wireless station. The clock’s accuracy is absolute. If the pendulum is out of phase by one thousandth of a second the radio signal will bring it to order. Clockmarkers expect to see radio controlled clocks in use in railway stations, factories and Post Offices. Keystone Photo Shows: Mr. Smith’s radio clock (left), seen with the Electronic Pulse Recorder at the Goldsmith Hall tonight. (Credit Image: Keystone Pictures USA/ZUMAPRESS)

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