Matches in DBpedia 2014 for { ?s ?p A "Perikon" detector, 1914. Instead of a wire-to-crystal contact, this had a crystal-to-crystal contact. The bornite crystal ' on the adjustable arm was moved forward until it touched one of the zincite crystals on the carousel '. Multiple zincite crystals were provided because the zincite was vulnerable to damage from atmospheric electricity.. }
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- Cat's-whisker_detector caption "A "Perikon" detector, 1914. Instead of a wire-to-crystal contact, this had a crystal-to-crystal contact. The bornite crystal ' on the adjustable arm was moved forward until it touched one of the zincite crystals on the carousel '. Multiple zincite crystals were provided because the zincite was vulnerable to damage from atmospheric electricity.".