La unidad de energia de los fotones es el
electronVolt (eV) y corresponde a la energia ganada por un electron con carga elemental cuando se desplaza a traves de una diferencia de potencial de 1 Volt.
Mass and energy are equivalent, according to Einstein, and scientists have noticed that the energy scale associated with dark energy, about one-thousandth of an
electronvolt, is approximately the same as the masses associated with the three known types of neutrinos.
Current estimates suggest that neutrinos may have a mass of roughly 2
electronvolts.
The machine at CERN, Europe's particlephysics laboratory near Geneva, Switzerland, will restart with collisions at 13 trillion
electronvolts almost double the current record.
With collision energies capable of reaching 14 tera
electronvolts (TeV), the collider is designed to push a proton beam close to the speed of light, sending it whizzing 11,000 times a second around a 27-kilometer (17-mile) tunnel some 100 meters (32 5 feet) below the ground in an area straddling the Swiss-French border.
This initial demonstration achieved an acceleration gradient, or amount of energy gained per length, of 300 million
electronvolts per meter.
