Electronvolt is equal to . It is a common unit of energy within physics, widely used in solid state, atomic, nuclear, and particle physics. It is commonly used with the metric prefixes milli-, kilo-, mega-, giga-, tera-, peta- or exa- (meV, keV, MeV, GeV, TeV, PeV and EeV respectively). In some older documents, and in the name Bevatron, the symbol BeV is used, which stands for billion (10) electronvolts; it is equivalent to the GeV. An electronvolt is the amount of energy gained (or lost) by the charge of a single electron moving across an electric potential difference of one volt.
Tera, Kutch (1718–1741). During the reign of Lakhaji I (1741–1760), the Chief of Tera revolted against the ruler of Kutch. Rao Lakhaji I sent his troops to subdue the Chief, damaging the village and the nearby Tera Fort. The Chief of Tera subsequently surrendered and swore allegiance to Lakhaji once again. However, most of the present structures and Havelis were built during reign of Rao Deshalji II (1819–60). The walls of fort was damaged in 1819 Rann of Kutch earthquake which were repaired later. The village and its environs are home to a number of historic structures, including: At present, though farming