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
EMLL 15th Anniversary Show noticed by the referee. Records indicated that there were two preliminary matches on the September 24th show, but records of neither the participants nor the actual results of these matches have been confirmed. The third match of the night featured Rito Romero wrestling against Black Shadow, but no record of who won is found. Likewise the results of the fourth match between Gory Guerrero and Bobby Bonales are also undocumented. In the main event NWA World Middleweight Champion Tarzán López successfully defended the championship against the challenger Harry Fields in a Best two-out-of three falls match. EMLL 15th Anniversary Show