Gray Molecular Model Atom, 2.2cm, 4 Holes, 10-Pack Base Shape_A-Shaped dimensioned to drop into the

dimensioned to drop into the PH0652 optical bench for hands-on study of Malus's law and crossed-polaroid extinction

each 20mm on edge with a top hook for suspending in water during Archimedes-principle and buoyancy experiments

Two-amp low-voltage power pack delivering 6 to 12V AC for optical benches and demonstration apparatus

Straight receiver adapter in borosilicate glass features 19/26 socket for distillation collection and chemistry apparatus connections

Gray Molecular Model Atom, 2.2cm, 4 Holes, 10-Pack Base Shape_A-Shaped dimensioned to drop into theFour hole gray atoms in a 10 pack at 2. 2cm diameter, conventionally standing in for metals at four bonded centers in ball and stick molecular model kits.