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Mineral - Radio Detector, Silicon, 1901-1920 Object Reg. No: ST 028667

Summary:
One piece of psilomelane (Manganese Oxides), used in a radio detector. Properties discovered by Karl Ferdinand Braun after 1874. First marketed as a detector by Telefunken in 1901. Possibly artificial in origin.
Description:
Small piece of brownish material with lighter coloured inclusions. Accompanied by label from missing display board.
Acquisition Information:
Purchase & Subsequent Transfer from Science Museum of Victoria (SMV), 1973
Discipline: Technology
Dimensions: 15 mm (Width), 22 mm (Length)

More information

Tagged with: radios, radio detector crystals, manganese minerals, psilomelane
Themes this item is part of: Information & Communication Collection
Primary Classification: COMMUNICATIONS
Secondary Classification: Radio
Tertiary Classification: receivers
Inscriptions: Label: PSILOMELANE/(MAINLY MANGANESE OXIDES)
Date Used: 1901-1920
References: Galena - http://en.wikipedia.org/wiki/Galena

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