Pith ball. A pith ball is suspended by a thread from a non-conductive stand. When a charged metal sphere is brought close to the neutral ball, the charges inside it separate (electrostatic induction). This leads to the net attraction force between the ball and the charged sphere (left frame). When the sphere touches the ball, some charge is transferred and the ball becomes charged with the same polarity charge. As a result the sphere and the pith ball start to repel each other (right frame). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Turtle Rock Scientific |
Taille de l’image : | 5700 px × 4580 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |