The Townâs history is documented in the Bedford collection at the Bedford Public Library. Visitors are drawn to view historic sites including homes, the Old Burying Ground, The Wilson Mill, the Job Lane House and the original Bedford Flag that was taken to the battle of Lexington and Concord in 1775.
The phenomena of atmospheric electricity are of three kinds. There is the electrical phenomena of thunderstorms and there are the phenomena of continual electrification in the air, and the phenomena of the polar Aurora constitute a third branch of the subject.
Air is normally an insulator for electricity. But, as for any insulator, air also breaks down and allows electricity to flow when the voltage is sufficiently high. This breakdown voltage of dry air is about 30 lakh volts for a distance of about one metre (that is, an electric field of 3 million volts per metre). Lightning discharge comes from an average height of 7 km.