Relay NAND Gate Demonstration Board Stock Type_Stocked Adjustment screws (3 x 1

Adjustment screws (3 x 1 inch) on a metal base position two neodymium magnets

sized at 10 inches for focused respiratory anatomy teaching

color filters with Young's slits

Used to compare two light sources by sliding them until both faces of a paraffin block appear equally lit

producing distinct audible pitches at varying spin speeds to relate rotational frequency to perceived sound frequency

Relay NAND Gate Demonstration Board Stock Type_Stocked Adjustment screws (3 x 1Relay based NAND gate module on a demonstration base, introducing combinational logic behavior by using physical relays so students can hear and see the gate state in real time.