Low-Friction Double-Tandem Plastic Pulley, 38 and 50mm Diameter Subcategory_Force and Motion 5 mm in diameter

5 mm in diameter

Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input

75 inches tall with visible crankshaft

adjustable from 0 to 45 degrees with an alignable pulley and included pan and roller

producing oxygen's characteristic emission lines for spectroscope viewing of atomic-emission and quantum-energy levels

Low-Friction Double-Tandem Plastic Pulley, 38 and 50mm Diameter Subcategory_Force and Motion 5 mm in diameterTandem double plastic pulley pairing 38mm and 50mm low friction wheels on an open sided steel frame, eliminating cord threading during setup in compound pulley experiments.