description page is/was here. All following user names refer to en.wikipedia 10:59, 28 May 2004 Magnum1 232×308 (10,401 bytes) (IrvingLangmuir) English
DescriptionRadiotron-IrvingLangmuir-1922.jpgIrvingLangmuir con un radiotrón (1922) Date October 1922 Source [1] // Popular Science, October, 1922, page 63: // Irving Langmuir--Creator