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 Fort Lakhpatji (ruled 1741-1760). Sumraji Thakore of Tera, the chief of Tera Estate, spoke badly of the Rao of Kutch. Lakhpatji sent an army to Tera, to subdue the revolt. For the first time in history of Kutch, artillery power was used in war. This artillery was set up by the famous Ram Singh Malam. The cannon power destroyed most of the fort. The war ended after three months of siege, when Sumraji surrendered and gave a formal apology for his remarks. The walls of fort was damaged in 1819 Rann of Kutch earthquake which were repaired later. The fort is