منابع مشابه
- Atomic Spectra Atomic Structure
T HE present edition of this work contains a number of corrections and additions; Birge's new set of fundamental constants has been adopted throughout, and various tables, especially the table of ionization potentials, have been brought up to date. The author is indebted to Professor J. W. Ellis of the University of California at Los Angeles for a list of errors and corrections ; several of the...
متن کاملOn Block Monoid Atomic Structure
Several properties of atoms of block monoids are developed. We count the number of atoms of small cardinality. We also develop various properties of atoms of maximal cardinality (the Davenport constant). We use these properties to find new bounds on the Davenport constant both in general and for several important classes of groups. We also determine the Davenport constant (with computer assista...
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electronic, magnetic, optical a g g r e g a t e s o f and chemical properties are atoms/molecules C found to be very different containing a few to several from their bulk form and t h o u s a n d s o f depend sensitively on their atoms/molecules. They s i z e , s h a p e a n d h ave ve r y d i f f e r e n t composition. Thus, as has properties from isolated been mentioned above, atoms/molecules...
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Finding optimal three-dimensional molecular configurations based on a limited amount of experimental and/or theoretical data requires efficient nonlinear optimization algorithms. Optimization methods must be able to find atomic configurations that are close to the absolute, or global, minimum error and also satisfy known physical constraints such as minimum separation distances between atoms (b...
متن کاملAtomic spectral methods for molecular electronic structure calculations.
Theoretical methods are reported for ab initio calculations of the adiabatic (Born-Oppenheimer) electronic wave functions and potential energy surfaces of molecules and other atomic aggregates. An outer product of complete sets of atomic eigenstates familiar from perturbation-theoretical treatments of long-range interactions is employed as a representational basis without prior enforcement of a...
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ژورنال
عنوان ژورنال: Nature
سال: 1920
ISSN: 0028-0836,1476-4687
DOI: 10.1038/105231b0