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Auf dem Holzweg durchs Universum: Warum sich die Physik by Alexander Unzicker

By Alexander Unzicker

In der Physik herrschen scheinbar goldene Zeiten. Raumsonden erforschen den Kosmos, Teilchenbeschleuniger den Urknall. Doch keine Disziplin treibt so seltsame Blüten: Spekulationen über Paralleluniversen etwa oder die String-Theorie, die mit Wissenschaft nicht mehr viel zu tun haben. Gleichzeitig sind grundlegende Fragen der Physik wie die nach der Masse noch immer unbeantwortet. Doch statt Lösungsansätze von Einstein oder Dirac aufzugreifen, verwendet guy lieber Milliarden auf die Suche nach neuen Teilchen und mutmaßt über verborgene Dimensionen. Alexander Unzicker liest der Physik die Leviten - und weist ihr den Weg aus dem Labyrinth, in dem sie sich verlaufen hat. Seine fundierte und packende examine beweist, dass die derzeitigen Theorien dem Kosmos mit seinen unendlichen Weiten nicht gerecht werden. "Unzicker ist ein naturwissenschaftlicher Ketzer. Und das meine ich als Kompliment!" Vince Ebert, Wissenschaftskabarettist

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The attractive bonding forces are coulombic; that is, positive and negative ions, by virtue of their net electrical charge, attract one another. 9) In these expressions, A, B, and n are constants whose values depend on the particular ionic system. The value of n is approximately 8. Ionic bonding is termed nondirectional, that is, the magnitude of the bond is equal in all directions around an ion. It follows that for ionic materials to be stable, all positive ions must have as nearest neighbors negatively charged ions in a threedimensional scheme, and vice versa.

1) The atomic weight of an element or the molecular weight of a compound may be specified on the basis of amu per atom (molecule) or mass per mole of material. 023 ϫ 1023 (Avogadro’s number) atoms or molecules. 85 g/mol. Sometimes use of amu per atom or molecule is convenient; on other occasions g (or kg)/mol is preferred; the latter is used in this book. 3 ELECTRONS IN ATOMS ATOMIC MODELS During the latter part of the nineteenth century it was realized that many phenomena involving electrons in solids could not be explained in terms of classical mechanics.

I, Structure, p. 51. Copyright © 1964 by John Wiley & Sons, New York. ) materials. The present discussion deals with several common metallic and ceramic crystal structures. The next chapter is devoted to structures for polymers. When describing crystalline structures, atoms (or ions) are thought of as being solid spheres having well-defined diameters. This is termed the atomic hard sphere model in which spheres representing nearest-neighbor atoms touch one another. 1c. In this particular case all the atoms are identical.

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