Leclanché Cell Electrochemistry Demonstration Subject_Biology Entry-level two-part human skull model

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

and 38mm lens holder - an inexpensive starter platform for image-formation experiments

pyrotechnic seatbelt actuation

Five ceramic ring magnets at 1

the high-resistance option for voltage-divider work

Leclanché Cell Electrochemistry Demonstration Subject_Biology Entry-level two-part human skull modelZinc and carbon electrochemistry demonstration cell with electrolyte, illustrating the primary battery chemistry behind the Leclanche cell the historical predecessor of the modern dry battery.