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John Snagge's London

BBC Radio London
on BBC Radio London

National Physical Laboratory
This week JOHN SNAGGE looks at one aspect of the work of the National Physical Laboratory at Teddington and finds out how, with the aid of laser beams, you measure exactly the height of a skyscraper, the depth of a coal-mine, or the length of a tunnel.
Producer ROGER CLARK

Contributors

Unknown:
John Snagge
Producer:
Roger Clark
Source: Radio Times

BBC Radio London

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