Steel Ball Bearings, 16mm, 10-Pack Entomology & Zoology_Zoology Models Demonstration electrophorus with a 9cm

Demonstration electrophorus with a 9cm aluminum disc

this insulated wire pairs a 4mm banana plug with a crocodile clip at the other end for color-coded patch wiring

a one-meter constantan resistance wire graduated in millimeters

letting students compare four densities by mass alone while the volume is held constant across the set

Four-cell D-size holder in unbreakable plastic with curved retention sides

Steel Ball Bearings, 16mm, 10-Pack Entomology & Zoology_Zoology Models Demonstration electrophorus with a 9cmTen pack of 16mm steel ball bearings sized as a larger projectile for ramp experiments, collision studies, and mechanical systems setups with increased momentum per unit requirements.