Relay NAND Gate Demonstration Board Biology_Entomology & Zoology including 100 long flexible bonds

including 100 long flexible bonds for delocalized representations and crystal-lattice construction at scale

Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments

700-microfarad electrolytic capacitor in an ABS module with 4mm sockets

Polystyrene electrolyzer with a transparent cone-shaped cup over a banana-socket base

Relay NAND Gate Demonstration Board Biology_Entomology & Zoology including 100 long flexible bondsRelay 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.