Wooden Resistance Board Lab Equipment_Centrifuges exposing the rotating coil and

exposing the rotating coil and field magnet for direct observation as students supply 4-9V to drive the rotation

Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur

Used to crank a row of 16 cam-driven rods through a moving sine wave

Distilling apparatus in borosilicate glass includes 500mL flask and 300mm condenser for separating liquid mixtures by boiling point differences

Twelve-slot natural wood buret rack organizes vertical buret storage and simultaneous titration setup in chemistry and analytical laboratory classrooms

Wooden Resistance Board Lab Equipment_Centrifuges exposing the rotating coil andPolished wood board with three constantan wires (1 0. 7 0. 5mm) and two copper wires (0. 7 0. 35mm) tensioned across 1m, with 4mm sockets at each end for resistivity comparison.