Resistance Substitution Board, 33Ω - 10MΩ Subcategory_Reflection and Refraction demonstrating mechanical-to-electrical energy conversion as

demonstrating mechanical-to-electrical energy conversion as the crank lights the bulb

and 6V-powered ignition light staging each step

the half-size circulatory model traces arterial and venous pathways from heart to peripheral capillaries

suspending thermometers above hot plates or fixing specimens in orientation

Resistance Substitution Board, 33Ω - 10MΩ Subcategory_Reflection and Refraction demonstrating mechanical-to-electrical energy conversion asRotary knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections, sized to drop different loads into a circuit without rewiring.