Description
Seventy-times enlarged skin cross section reveals epidermis
and tubing
Large-format 8
Reproduces Ewald von Kleist's 1745 charge-storage device with concentric metal cups around a plastic dielectric
5cm and field strength from 100 to 7500 Gauss across the working volume
Simple Tangent Galvanometer Racks & Stands_Draining Racks Seventy-times enlarged skin cross sectionUsed to measure current by reading compass needle deflection inside a coil, this simple tangent galvanometer turns Oersted's effect into a quantitative ammeter calibrated against Earth's field.
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