| Posted on July 17, 2013 
| Static electricity is the result of an imbalance between negative and positive charges in an object. Charges build up on the object’s surface until they find a way to discharge. By rubbing certain materials against each other, negative charges can transfer from one object to the other. For example, when rubbing a balloon against a woolen fabric or your hair, the balloon becomes negatively charged and the hair/fabric becomes positively charged. In this experiment we will rub together different objects and measure their charge with a charge logger sensor. A Faraday cage will be used to protect the objects from external electric fields. Download experiment |  |  |  |