Measurement Techniques

, Volume 41, Issue 9, pp 873–875 | Cite as

The problem of the choice of the basic si units (for discussion)

  • M. F. Yudin
Letters to the Editor


The error is indicated in ascribing the units of angular measurement, radians and steradians, to the class of dimensionless physical quantities and the possibility is also demonstrated of including the lumen and the radian as fundamental SI units.


Solid Angle Dimensionless Quantity Light Flux Plane Angle Fundamental Unit 
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    S. V. Gorbatsevich, E. F. Dolinskii, and M. F. Yudin,Izmer. Tekh., No. 7, 63 (1971).Google Scholar
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    M. F. Yudin,Izmer. Tekh., No. 1, 71 (1995).Google Scholar

Copyright information

© Kluwer Academic/Plenum Publishers 1999

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  • M. F. Yudin

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