Projection Screen 36 x 48" LabLearner Insulated copper solenoid 155mm long

Insulated copper solenoid 155mm long with a 27mm internal diameter

paired with 4mm sockets so iron-filing patterns can be mapped around a current-carrying conductor for Oersted's experiment

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

sized for individual student-lab use in simple-machines units

Projection Screen 36 x 48" LabLearner Insulated copper solenoid 155mm longWall 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"