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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Howard, John |
Taille de l’image : | 5118 px × 3496 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |