Eman

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Eman (E, eman, Em, from emanation, the former name of radon ) is a physical unit and was previously used in spa medicine and mining to indicate the activity concentration of radium emanation Rn-222 in a gas or liquid. The unit was introduced in 1921.

In 1985 it was replaced by the Becquerel .

1 Eman = 0.275 ME = 10 −10 Ci / l = 3.7 Bq / l

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  1. ↑ Today's and earlier units of radiometry ( memento of the original from March 29, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved December 14, 2012  @1@ 2Template: Webachiv / IABot / j-grzesina.de
  2. ↑ Copy of the Zwickau Mountain Police Ordinance 1944. Page 175