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Description: | A group of 10 small glass electronic valves with 8 metal pins on each base. Slightly dome shaped at top of tube. One valve does not appear to be glass but blackened metal. Makers: Tungsram, England; Radiotron, U.S.A. RCA; Mullard British made (x2); Raytheon, U.S.A. (x4) and Ken-Rad, U.S.A. (x2). Part of a massive collection of valves in a cardboard box. | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1800 | Source: | University of Aberdeen | Creator: | Tungsram; Radiotron RCA; Mullard; Raytheon and Ken-Rad | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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