Description

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

and small diffraction objects in the optical-bench beam path for repeatable interference and diffraction work

Six replacement gold leaves cut to fit the standard gold-leaf electroscope

a 12V/21W lamp house

Circular Perspex Block for Refraction Science at Home_Earth Science Three-wheel stacked metal pulley forRound 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.

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Circular Perspex Block for Refraction Science at Home_Earth Science Three-wheel stacked metal pulley for

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