US$ 169.99
Three-wheel stacked metal pulley for maximum mechanical advantage in compound pulley systems
a 12V/21W lamp house
Designed for strong divergence demos
Six replacement gold leaves cut to fit the standard gold-leaf electroscope
and raised molded graduations
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.
US$ 169.99
US$ 1297.50
US$ 949.50
US$ 725.00
US$ 949.50
US$ 1097.50
US$ 1797.50
US$ 1300.00
US$ 1647.50
US$ 1375.00