Bimetallic Strip Thermal Expansion Demonstrator Type_Round End and acetate strips for hollow-conductor

and acetate strips for hollow-conductor work

this compact insulated wire keeps color-coded wiring intact when student work shifts to small-scale breadboarded circuits

the moderate-resistance moderate-current option in the compact-tube rheostat line

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

Six 60-inch wires - steel and brass at 22

Bimetallic Strip Thermal Expansion Demonstrator Type_Round End and acetate strips for hollow-conductorWooden handled bimetallic strip of bonded copper and steel, curving visibly under heat as the two metals expand at different rates, the principle behind thermostats and coils.