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
Ballad of a Tin Man Man" was published in the United States by Post Hill Press on September 12, 2017(). John D. Kuhns is an author, artist, businessman and investment banker, known for renewable and alternative energy investments around the world. Ballad of a Tin Man Ballad of a Tin Man is a 2017 novel by John D. Kuhns. The book is based on actual events which took place during Kuhns’ career during the late 1980s. The book finds Jack Davis, the protagonist in this novel as well as Kuhns’s earlier novel China Fortunes, down-and-out. His investment banking business is going nowhere, and his girlfriend