energy band

In solid-state physics, the electronic band structure (or simply band structure) of a solid describes the range of energies that an electron within the solid may have (called energy bands, allowed bands, or simply bands) and ranges of energy that it may not have (called band gaps or forbidden bands).

Energy is a Taiwanese pop rock boy band formed in 2002. The original band consisted of five members, namely Milk, Ady, Toro, Penny and Joe. Toro and Milk left the band in 2003 and 2005 respectively. Xiao Gang joined the band in mid-2007. The band disbanded in 2009.