Abstract

One of the earliest applications of radio was the transmission of time signals as an aid to sea navigation and today signals are used to synchronize atomic time throughout the world for navigational and other purposes. The comparison of distant clocks by radio is now a precise and well known technique. This was not the case in 1905 when Einstein published his famous paper on relativity and there is some excuse for the mistakes he made in the thought experiments which he described in order to determine the relative rates of two identical clicks in uniform relative motion. But there is not excuse for their repetition in the current literature.