Mache (unit)
Mache (symbol ME from German Mache-Einheit, plural Maches) is an obsolete unit of volumic radioactivity named for the Austrian physicist Heinrich Mache.[1] It was defined as the quantity of radon (ignoring its daughters; in practice, mostly radon-222) per litre of air which ionises a sustained current of 0.001 esu (0.001 StatAmpere).
1 ME = 3.64 Eman = 3.64×10−10 Ci/L = 13.4545 Bq/L.
References
- ^ Riezler, Wolfgang (1950). Einführung in die Kernphysik (4 ed.). H. Hübener. p. 49. Retrieved 2009-09-25.
{{cite book}}: Cite has empty unknown parameter:|coauthors=(help)
 | This nuclear physics or atomic physics–related article is a stub. You can help Wikipedia by expanding it. |
 | This standards- or measurement-related article is a stub. You can help Wikipedia by expanding it. |