Wooden Test Tube Support, 15-Place Glass Sets & Apparatus_Organic Chemistry Sets Extended-range rheostat at 12 ohms

Extended-range rheostat at 12 ohms and 4A on a 200x44mm tube with constantan winding

relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations

Fifteen-frame pulley block assembly set with five each of single

Used to teach motor operation through the classic St

Three-wire setup pairs a 100N spring-balanced string

Wooden Test Tube Support, 15-Place Glass Sets & Apparatus_Organic Chemistry Sets Extended-range rheostat at 12 ohmsSolid hardwood 15 place test tube rack milled from a single block with slotted holes, keeping tubes up to 13 mm upright on the bench during student experiments.