Relay NAND Gate Demonstration Board Biology_Entomology & Zoology Used to generate triboelectric static

Used to generate triboelectric static charge by rubbing against glass

this universal charger keeps portable instruments running between sessions without rotating in fresh disposable batteries

this three-piece acrylic equilateral prism set supports optics experiments in dispersion and wavelength separation

Millimeter-graphed 100 x 75mm screen on a 2

625 inches in diameter

Relay NAND Gate Demonstration Board Biology_Entomology & Zoology Used to generate triboelectric staticRelay 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.