Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home 5 newtons for measuring small

5 newtons for measuring small forces during spring-law and tension-force classroom investigations

Metal spouting cylinder with multiple outlet holes at different heights

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

relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations

Pituitary Gland and Hypothalamus Model, Greatly Enlarged Science at Home 5 newtons for measuring smallGreatly enlarged pituitary hypothalamus complex exposes the anterior and posterior lobes with connecting infundibulum for endocrine anatomy and physiology teaching.