Muffin-tin approximation Muffin-tin approximation The muffin-tin approximation is a shape approximation of the potential well in an crystal lattice. It is most commonly employed in quantum mechanical simulations of the electronic band structure in solids. The approximation was proposed by John C. Slater. Augmented plane wave method (APW) is a method which uses muffin-tin approximation. It is a method to approximate the energy states of an electron in a crystal lattice. The basic approximation lies in the potential in which the potential is assumed to be spherically symmetric in the muffin-tin region and constant in the interstitial region. Wave functions (the augmented
Doe or Die: 15th Anniversary and it was released on iTunes on June 29, 2010. A video for "Feel My Pain" was released for the single on June 7, 2010. Doe or Die: 15th Anniversary Doe or Die: 15th Anniversary is the 15th anniversary edition of rapper AZ's debut album, "Doe or Die", which was released in 1995 and received critical acclaim from music outlets. The album was released on November 30, 2010. "Doe or Die 15th: Anniversary" features production from Frank Dukes, MoSS, Statik Selektah, Baby Paul, Lil' Fame from M.O.P., and Roctimus Prime. The album also features vocals from R&B singer June Summers.