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Description: | Brown sealed box; top marked with terminals set around a short metal pole with loose small toroidal coil around iron core over pole. Ceramic feet. Filled with hidden wires and hard wax . Poulsen's speaking arc for modulating a radio signal. | 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: | 1905-1920 | Source: | University of Aberdeen | Creator: | Marconi's Wireless Telegraph Co. Ltd. | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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