Description

2A rheostat with oxidized constantan winding on a 300x44mm vitreous-enameled tube

while variable focus produces five parallel beams that a shutter masks selectively

Designed for class-front light and prism demos

this acrylic 12

Red LED on a demonstration base with 4mm plug connections

Newton's Color Disc on Wooden Base, 13" Lab Equipment and Supplies_Lab Supplies 2A rheostat with oxidized constantanWooden base Newton's color disc at 13 inches tall, the hand driven mechanism spinning seven color segments fast enough to merge into apparent white through persistence of vision.

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Newton's Color Disc on Wooden Base, 13" Lab Equipment and Supplies_Lab Supplies 2A rheostat with oxidized constantan

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