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
Puyo Puyo! 15th Anniversary from the Madou series, who serve as boss characters in the story modes. As "Puyo Puyo! 15th Anniversary" was created to commemorate the fifteenth anniversary of Puyo Puyo, it includes most of the "Fever" characters plus six of the characters from the "Madou" series; they are said to have fallen from the sky into Primp Town, the primary setting of the Fever series games. There are a total of twenty-two characters in this game. 15th Anniversary has a slew of new modes, and also includes modes that emulate the original "Puyo Puyo", "Puyo Puyo Tsu" and "Puyo Pop Fever". In