US$ 87.00
and small diffraction objects in the optical-bench beam path for repeatable interference and diffraction work
running battery-free for repeatable classroom and stockroom use
and raised molded graduations
Three-wheel stacked metal pulley for maximum mechanical advantage in compound pulley systems
Designed for strong divergence demos
Circular Perspex Block for Refraction Science at Home_Earth Science and small diffraction objects inRound 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$ 87.00
US$ 70.00
US$ 64.00
US$ 104.00
US$ 165.00
US$ 60.00