Detector column discs, Branly collection no. 94
Detector column discs, Branly collection no. 94
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Metal stand with 16 circular weights for investigating coherer effect.
Electrical items from Branly collection
Detector column discs, Branly collection no. 94
Metal stand with 16 circular weights for investigating coherer effect.
Stand, detector column, Branly collection no. 94
Diapason, or tuning fork, electrically maintained on wooden base, with pump between forks, Branly collection no. 38.