Description

and raised molded graduations

running battery-free for repeatable classroom and stockroom use

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

a 12V/21W lamp house

Greatly magnified HIV virion model separates into two parts exposing the outer envelope and interior capsid with RNA

Circular Perspex Block for Refraction Science at Home_Earth Science and raised molded graduationsRound 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

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Circular Perspex Block for Refraction Science at Home_Earth Science and raised molded graduations

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