TIMING OF RACES
A new method, of accurate timing in races and record attempts has lately been introduced in France which has the advantage of eliminating any wire or tubular strip placed across the course. These are subject to considerable wear and tear, and on occasion have been found to be dangerous.
. Instead of any material substance being stretched across the track there is a beam of light which strikes upon an apparatus containing a selenium cell on the other side of the track. Whenever this beam is interrupted by tho passage of a car -a mark is made electrically on a moving timing tape. These marks are repeated at every interruption of the beam of light without any resetting of the instrument, which has proved extremely satisfactory in a severe test made before English and French expert timekeepers.
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Bibliographic details
Evening Post, Volume CVII, Issue 32, 9 February 1929, Page 24
Word Count
139TIMING OF RACES Evening Post, Volume CVII, Issue 32, 9 February 1929, Page 24
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