Item # 96-3580
Using the E-field detector, teachers and students can investigate the effects of positive and negative charge. The probe of this detector can "sniff out" unknown charges, demonstrate charging by induction, and even prove the inverse square dependence of Coulombs Law.
At last electric fields are made visible!
Products being sold are not toys. They are for Educational / Labratory use only. They are not for use by children 12 and under.