Description

Two pith balls suspended on unspun silk from a brass pillar

Three-wheel stacked metal pulley for maximum mechanical advantage in compound pulley systems

and classroom precision measurement

running battery-free for repeatable classroom and stockroom use

Circular Perspex Block for Refraction Science at Home_Earth Science Two pith balls suspended onRound perspex refraction block, the curved face geometry letting beams enter along any radius for clean Snell's law angle work in ray box and refraction setups.

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Circular Perspex Block for Refraction Science at Home_Earth Science Two pith balls suspended on

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