12V DC Power Supply for Hoffman Voltameter, CE Certified Size_17.5 Inch Illustrates liquid-density changes with temperature

Illustrates liquid-density changes with temperature using a weighted 75mm hollow copper sphere that floats in 15°C water and sinks as the water warms to 30°C

and iron bobs

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

Steeply curved convex glass mirror at 50mm diameter and 50mm focal length

the leaded body delivering pronounced spectral separation for comparing dispersion against crown and flint baselines

12V DC Power Supply for Hoffman Voltameter, CE Certified Size_17.5 Inch Illustrates liquid-density changes with temperatureCE certified 12V DC power supply designed specifically for driving Hoffman voltameters during electrolysis demonstrations that separate water into hydrogen and oxygen.