Motor-Driven Van de Graaff Generator, 220,000V Science at Home_Chemical Science 25-inch Atwood machine with two

25-inch Atwood machine with two 2-inch blue-plastic pulleys on an aluminum rod

packaged in a wooden storage box

Two variable 0 to 6V DC outputs paired with two fixed 6V/10W and 12V/20W AC outputs on this power supply controller

and hinge-distance scales adjustable from 0 to 45 degrees

this Brownlee-pattern apparatus gives a clean visual proof of the 2:1 stoichiometry of water decomposition

Motor-Driven Van de Graaff Generator, 220,000V Science at Home_Chemical Science 25-inch Atwood machine with twoContinuously motor driven to supply a steady high voltage source, this silicone belt Van de Graaff generator demonstrates charge conservation, conduction, and ionization.