Physics Demonstration Loudspeaker Subcategory_Erlenmeyer Flasks sized for solenoid and transformer

sized for solenoid and transformer windings that need many turns in a compact space

and frequency timer modes for precise measurement of velocity

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

Heavy-duty die-cast alloy boss head with a painted gray finish and two adjustable thumbscrews

Drops a dense object and a feather together inside a 20-inch evacuated glass tube

Physics Demonstration Loudspeaker Subcategory_Erlenmeyer Flasks sized for solenoid and transformerMoving coil 4 ohm driver in a frame that orients vertically or horizontally, with 4mm sockets that connect directly to signal generators and other audio sources for sound wave demonstrations.