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
15th Anniversary Best Live History DVD Book 15th Anniversary Best Live History DVD Book 15th Anniversary Best Live History DVD Book (stylized as "15th Anniversary BEST LIVE HISTORY DVD BOOK") is the first compilation DVD book released by Japanese R&B-turned-pop singer Koda Kumi. The DVD book ranked #1 on the Rakuten Books Weekly Ranking in the pop/rock division. The DVD book was available nationwide in bookstores and convenience stores. "15th Anniversary Best Live History DVD Book" is the first compilation DVD book released by Japanese singer-songwriter Koda Kumi on March 26, 2015 and published by Takarajimasha. Due to the compilation being advertised as a DVD book and