Test Tube with Side Arm, 125 x 16mm, Borosilicate Glass Entomology & Zoology_Entomology Supplies showing how current through an

showing how current through an iron core builds magnetic flux in student investigations

demonstrating how a crane lifts loads through the mechanical advantage of a large wheel turning a small axle

91mm diameter

spherically ground

Permanent-magnet stack inside an 8 x 5 inch base recharges weakened bar and horseshoe magnets by realigning their domains - no electrical power

Test Tube with Side Arm, 125 x 16mm, Borosilicate Glass Entomology & Zoology_Entomology Supplies showing how current through anTest tube with side arm in borosilicate glass measures 125 x 16mm for gas collection, distillation, and vacuum filtration applications.