Sloping Pear-Shape Splash Head, 29/32 Flask and 29/32 Condenser Cones, Borosilicate Glass Mechanics_Kinematics Four-point-five-ohm 9A standard rheostat with

Four-point-five-ohm 9A standard rheostat with constantan winding on a vitreous-enameled steel tube

Tracks a trapped gas volume against temperature in a graduated borosilicate U-tube with bulb set inside a 1000mL water-jacket beaker and stirrer

Seventy-times enlarged skin cross section reveals epidermis

5V tungsten-filament flash-lamp bulbs with E10 MES screw bases

introducing combinational-logic behavior by using physical relays so students can hear and see the gate state in real time

Sloping Pear-Shape Splash Head, 29/32 Flask and 29/32 Condenser Cones, Borosilicate Glass Mechanics_Kinematics Four-point-five-ohm 9A standard rheostat withSloping pear shape splash head in borosilicate glass fits 29 32 flask with cone sizing for vacuum distillation with splash prevention.