Simple Tangent Galvanometer Light & Optics_Reflection & Refraction Double-vessel copper calorimeter set with

Double-vessel copper calorimeter set with a 75 by 50mm inner cup on cork supports inside a 100 by 75mm outer shell and a slotted lid

Amoeba model demonstrates pseudopodia

and 4-pole armature configurations on the same motor frame by swapping interchangeable enameled-copper armatures past a permanent bar magnet on a disc commutator

glass blocks

this foam-cut carrying case protects individual bones in molded slots sized to fit most full-size skeleton sets

Simple Tangent Galvanometer Light & Optics_Reflection & Refraction Double-vessel copper calorimeter set withUsed to measure current by reading compass needle deflection inside a coil, this simple tangent galvanometer turns Oersted's effect into a quantitative ammeter calibrated against Earth's field.