Lens Set with Supports, 42mm Diameter Glass Flasks_Boiling Flasks the second universal-logic gate that

the second universal-logic gate that complements the NAND for any digital-circuit construction

Distilling apparatus in borosilicate glass includes 500mL flask and 300mm condenser for separating liquid mixtures by boiling point differences

and phase-change experiments

this infant skull model reveals fontanelles

Two-hundred-fifty-ohm 5W fixed resistor in an ABS module with 4mm sockets

Lens Set with Supports, 42mm Diameter Glass Flasks_Boiling Flasks the second universal-logic gate thatLens set at 42mm diameter shipped with matching wooden supports, the fixed mounts steadying each lens for repeatable refraction and image formation experiments at student station scale.