4-Case 95% Ethanol High-Concentration Histology Alcohol, 1 Gallon Each Diameter_300mm Three brass conductors — sphere

Three brass conductors — sphere

5-meter precision optical bench

Hundred-mL bottle of 1M silver nitrate solution

the larger geometry pushing pole separation wide enough that field lines extend visibly beyond the magnet body for filing maps

Demonstrates electromagnetic induction and Faraday's law by stepping DC input into 25mm high-voltage sparks across adjustable electrode rods on an open chassis

4-Case 95% Ethanol High-Concentration Histology Alcohol, 1 Gallon Each Diameter_300mm Three brass conductors — sphereHigher concentration 95% ethanol in a 4 case of 1 gallon bottles, the histology grade fixative and dehydrating agent for tissue processing requiring stronger alcohol than 70% storage.