Stout-Walled Thistle Funnel, 30cm, Borosilicate Glass Entomology & Zoology_Entomology Supplies Used to step a class

Used to step a class through wave superposition and beat frequencies

5-liter electric kettle on 220V AC

75-inch rod

Pith balls suspended both inside and outside a charged metal cylinder make visible proof that electrostatic charge resides only on the outer surface of a conductor

Two independent output channels on this compact AC/DC power supply deliver six selectable voltages up to 12V at 500 mA each

Stout-Walled Thistle Funnel, 30cm, Borosilicate Glass Entomology & Zoology_Entomology Supplies Used to step a classStout walled thistle funnel in borosilicate glass measures 30cm with thick construction for controlled liquid addition in chemistry procedures.