Thoughtful gifts for curious people

Tesla's Coil Patent Tote Bag


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Tesla’s original patent application for the use of his famous coil to transmit electricity wirelessly. This amazing device is a radio frequency oscillator that drives an air-core double-tuned resonant transformer to produce high voltages at low currents.

Also available as a t-shirt.

Black Organic cotton tote bag with long handles.
Measures 36 x 38cm, with 8cm gusset