47" 3-Wire Sonometer for Mersenne's Law Base Shape_Rectangular generating enough output in direct

generating enough output in direct sunlight to spin a small motor or propeller during photovoltaic and renewable-energy student investigations

Spanning C (256 Hz) through C (512 Hz) in scientific pitch

and workshop tasks

providing waterproof chemical-resistant splash protection with a smooth nonporous surface that wipes clean

Simple-form Boyle's Law apparatus pairing a graduated plastic syringe on a wooden block with a weighted piston

47" 3-Wire Sonometer for Mersenne's Law Base Shape_Rectangular generating enough output in directThree wire setup pairs a 100N spring balanced string, a pulley loaded weighted string, and a wrist pin string across a 720mm bridge span on a 1290 x 130 x 110mm hollow wooden sounding box.