منابع مشابه
Walther Recursion
Primitive recursion is a well known syntactic restriction on recursive deenitions which guarantees termination. Unfortunately many natural deenitions, such as the most common deenition of Euclid's GCD algorithm, are not primitive recursive. Walther has recently given a proof system for verifying termination of a broader class of deenitions. Although Walther's system is highly automatible, the c...
متن کاملThe Static Universe of Walther Nernst
Walther Nernst (1864-1941) was, without a doubt, one of the most remarkable physicists of the early 20th century. His main accomplishments were in the field of physical chemistry, a discipline he founded together with other well-known scientists, including J.H. van’t Hoff, W. Ostwald and S. Arrhenius. His most famous contribution to physics was the so-called third law of thermodynamics, for whi...
متن کاملTobias Walther: Floating ideas on lipids
T he fl uid mosaic model of membrane biology depicts proteins and lipids freely roaming in the lateral plane of the cell's plasma membrane. But in reality, the plasma membrane is highly compartmentalized. One such compartment is delineated by a protein scaffold beneath the membrane called the eisosome (from the Greek word eis, meaning " portal, " and soma, meaning " body "). Tobias Walther, tog...
متن کاملGeneralized Stern-Gerlach effect for chiral molecules.
The Stern-Gerlach effect is well known as spin-dependent splitting of a beam of atoms with magnetic moments by a magnetic-field gradient. Here, we show that an induced gauge potential may lead to a similar effect for chiral molecules. In the presence of three inhomogeneous light fields, the center of mass of a three-level chiral molecule is subject to an optically induced gauge potential, and t...
متن کاملSpin and the Stern - Gerlach Experiment
The word “quantum” means a single share or portion. In quantum mechanics, this means that energy comes in discrete chunks, or quanta, rather than a continuous flow. But it also means that particles have other properties that are discrete in a way that’s deeply counterintuitive. Today I want to tell you about one such property, called spin, and the experiment that discovered it: the Stern-Gerlac...
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ژورنال
عنوان ژورنال: Physik Journal
سال: 1980
ISSN: 0031-9279
DOI: 10.1002/phbl.19800360108