Description

a battery-free source of partial vacuum for bell-jar demonstrations without external power

diffraction

Two-foot acrylic rod with one end coiled into a 9-inch loop

Miniature desktop torso with 12 removable parts includes a dissectable head and brain for compact classroom anatomy and biology teaching

16.5" Inclined Plane Simple Machine Model Chemistry a battery-free source of partialSixteen and a half inch wooden inclined plane with a paired cart, demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope.

Exchange/Return Notes

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16.5" Inclined Plane Simple Machine Model Chemistry a battery-free source of partial

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