Photoelectric Cell Unit Subject_Chemistry and 500mm focal lengths for

and 500mm focal lengths for comparative refraction experiments

and ray-tracing demos

Turning the hand crank walks students through every stage of the 2-stroke gasoline firing cycle on a 14-inch model

and raised graduations with full autoclave and dishwasher tolerance

Heavy-base Bunsen burner adds stopcock gas control for fine flame adjustment during chemistry experiments with liquid propane or butane fuel

Photoelectric Cell Unit Subject_Chemistry and 500mm focal lengths forLED output photoelectric cell on a 3. 875x2. 75 inch plastic base with 4mm threaded sockets, supplying a soldering free unit for student built optoelectronic and light detection circuits.