Projection Screen 36 x 48" LabLearner the polished 90-45-45-degree faces redirecting

the polished 90-45-45-degree faces redirecting light at right angles for total internal reflection demos

Adjustable mass on one fork shifts its 440Hz pitch by a few hertz

providing a measurable projection surface for sizing real images formed by lenses and concave mirrors

easily inclinable surface for dynamic-cart and momentum experiments in mechanics units

Designed to electrolyze water into separately collected hydrogen and oxygen

Projection Screen 36 x 48" LabLearner the polished 90-45-45-degree faces redirectingWall automatic roll back spring action screens (box type casing), with hooks for mounting on walls and an AUTOMATIC roller mechanism for winding. Wall automatic roll back spring action screens (box type casing), with hooks for mounting on walls and an AUTOMATIC roller mechanism for winding. Size : 36 x 48"