Related to variance: standard deviation, variance analysis Variance The discrepancy between what a party to a lawsuit alleges will be proved in pleadings and what the party actually proves at trial.
Figure 2: Friction, pressure, and. separation are the major causes of. industrial static electricity. A charged insulator can remain charged for many hours. Opposite. polarity charges can exist on an insulator at the same time. Charges will not migrate on insulators.
Lightning is a discharge of static electricity that occurs when there is an imbalance in the electrical charge between the cloud and the earth's surface. Put very simply, it is a giant electric spark in the sky-a very powerful one. It can stop a person's heart and cook their internal organs.