A teacher demonstrates to his secondary school physics class how static electricity can be used to light up a neon light bulb. The silver dome is the

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A teacher demonstrates to his secondary school physics class how static electricity can be used to light up a neon light bulb. The silver dome is the top of a small Van de Graaff generator. An endless insulating belt runs from the base of the generator to a pulley within the dome. Electrical charge is sprayed onto the belt at the bottom and is collected by a row of needles within the dome. The charge on the dome builds up and can then be discharged through a bulb, making it light up.

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Size: 5118px × 3496px
Photo credit: © JOHN HOWARD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: class, de, education, experiment, expt., generator, graaf, graaff, graf, graff, lesson, physics, pupil, school, science, student, van