How do field mills work?
Question: How does lightning form? Electrically charged particles result from the friction created by rapidly rising and decending air within a convective cloud. The weight of the negatively charged particles tends to migrate to the bottom of the cloud while lighter positively charged particles tend to migrate into higher regions. The natural forces of nature attempt to keep things in balance, equal amounts of negative and positive charge thus, this separation is not normal. The air between these separated areas acts as an insulator until the charge is too great and breaks down. The resulting spark is what we have come to call lightning as the positive and negative charged areas equalize. Several types of lightning are common: * In-cloud lightning extends from one charged region of a cloud to another * Cloud-to-cloud lightning extends between two clouds * Cloud-to-air lightning extends from a cloud to the air, not touching the ground * Cloud-to-ground lightning stretches from a cloud t