... separation t =t
=0.
3.1 A glimpse of classical relativity theory
97
Galileo Galilei (1564–1642), Italian
scientist, professor of mathemat-
ics at the University of Pisa. Only
those who have visited ... specialized in the precise measurements of
the speed of light.
His older colleague Edward Williams Mor-
ley was American physicist and chemist, pro-
fessor of chemistry at Weste...
... FUNCTIONS OF CLASS Q
The postulates of quantum mechanics, especially the probabilistic interpretation
of the wave function given by Max Born, limits the class of functions allowed (to
“class Q”, or quantum ).
Any ... square of the spin
S
2
and one of its components S
z
.
2.1.11 INDICES OF SPECTROSCOPIC STATES
In summary, assumptions about the homogeneity of space and time, i...
... characterized by
the density of states (the number of states per unit energy) as a function of en-
ergy. This may cause some confusion, because the number of continuum states in
density of states
any energy ... at
the University of Chicago. Franck also partici-
pated in the Manhattan Project. As a freshman
at the Department of Law at the University of
Heidelberg he made the ac...
... let us ignore the quantum nature of these vibrations
56
).
56
Electronic energy hypersurfaces represent the potential energy surface (PES) for the motion of
the nuclei. In the quantum mechanical ... set) of the system: the
3s orbital of Na (when the electron resides on Na; we have atoms) denoted by |3s
and the 3p
z
orbital of Cl (when the electron is on Cl; we have ions, z is t...
... unexpected.
Reasoning like that given above has a great value as part of our understanding of
chemistry, of speaking about chemistry, of predicting and of discussing structures.
This is why we need hybridization. ... result of many years of coding by several tens of quantum chemists working under John
Pople. Pople was given Nobel Prize in 1998 mainly for this achievement....
... quantum chemistry
463
Fig. 9.15. a) A sketch of the valence band for a regular planar lattice of ground-state hydrogen atoms
and b) the valence band, as computed in the laboratory of Roald Hoffmann, ... every detail of this tangle of bands.
38
J M.André,J.Delhalle,J L.Brédas, Quantum Chemistry Aided Design of Organic Polymers”,
World Scientific, Singapore, 1991.
39
Besides t...
... one of the founders of solid state
quantum chemistry. More oriented towards chemistry than Levin’s book. Solid state the-
ory was traditionally the domain of physicists, some concepts typical of ... textbook of solid state chemistry. The theory of periodic systems (es-
pecially semiconductors) is presented in about 230 pages.
R. Hoffmann, “Solids and Surfaces. A Chemist’s Vi...
... direction of ∇ρ, we end up at a maximum of ρ. The compact set
of starting points which converge in this way to the same maximum is called the
basinofattractionofthismaximum, and the position of the ... concentra-
tions of ρ in the regions between nuclei? If yes, will it happen for every pair of
nuclei or for some pairs only? This is of obvious importance for chemistry, which
de...
... functioning of bacteriophage T (Fig. 13.21).
13.12 Synthons and supramolecular chemistry
753
the foundation of supramolecular chemistry – the chemistry that deals with the
complementarity and matching of ... shows a model of the complex of
EcorV with a fragment of DNA,
90
altogether about 62000 atoms. Fig. 13.19 high-
lights some aspects of the interaction.
Note the hierar...