3-Piece Pendulum Bob Set with Hooks (Brass, Copper, Iron), 25mm Hypotenuse_50mm registering induced or conducted charge

registering induced or conducted charge through the Coulomb-driven deflection of a single suspended leaf

Combined thermo hygrometer on a 105 mm metal dial pairing a -10 to 50°C thermometer with a 0 to 100 percent hygrometer

Universal 2-input NAND gate module with red/green LED outputs and a printed truth table

Fullerene C60 kit with 60 atoms and 90 bonds for building the spherical cage structure characteristic of fullerene carbon allotropes

Nine-material 1-inch cube set spanning brass

3-Piece Pendulum Bob Set with Hooks (Brass, Copper, Iron), 25mm Hypotenuse_50mm registering induced or conducted chargeThree bob pendulum set with 1 inch brass, copper, and iron bobs, each with a removable threaded hook for mass and density comparison in pendulum period investigations.