Dry Field Mapping Kit for Electric Field Visualization Base Size_2.3" the shorter focus delivering more

the shorter focus delivering more magnification at the cost of field of view

this simple tangent galvanometer turns Oersted's effect into a quantitative ammeter calibrated against Earth's field

Bicycle dynamo on a 4mm-socket base with a parallel-wired MES lamp and 2

Eight nickel-plated aluminum forks spanning C 256Hz to C 512Hz in a C-major scale

Dry Field Mapping Kit for Electric Field Visualization Base Size_2.3" the shorter focus delivering moreDesigned to let students draw their own electrodes on conductive graph paper and trace equipotential lines with a multimeter, this kit makes electric field patterns visible without high voltage.