Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda's 100 Chemical Myths: Misconceptions, Misunderstandings, PDF

By Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda

ISBN-10: 3319084194

ISBN-13: 9783319084190

A hundred Chemical Myths offers with well known but mostly unfaithful misconceptions and misunderstandings regarding chemistry. It comprises lucid and concise motives lower via fallacies and concrete legends which are universally appropriate to an international viewers. a variety of chemical myths are explored in those components; meals, drugs, catastrophes, chemical compounds, and environmental difficulties. Connections to pop culture, literature, video clips, and cultural heritage carry the reader’s curiosity while key suggestions are superbly annotated with illustrations to facilitate the certainty of surprising fabric. Chemical Myths Demystified is pitched to members with no formal chemistry history to fledgling undergraduate chemists to professional researchers and past.

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Extra resources for 100 Chemical Myths: Misconceptions, Misunderstandings, Explanations

Example text

In quantum mechanics, the status of a particle is described by a function which treats it as a superposition of spatially-localized states. This “wavefunction” Ψ reflects a “virtual” state of the particle, which becomes real with the probability |Ψ(r)|2 when the position of the particle is determined by a measurement at the location r. g. in determining the momenta of the individual atoms within a hot gas. The observer of a gas cannot know the velocities and positions of all of its constituent atoms, since it is simply not possible in practice to measure all of them.

Insofar as an axon of cell A repeatedly excites another cell B, the cells modify themselves so that the effectiveness of the excitation is amplified. The strength of the neural interconnections is thus fundamental in the storage of recollections. Learning is based on a fine adjustment of the connections (synapses) between the nerve cells, which transfer the excitations from cell to cell. They permit the recognition of patterns that have been stored in the network. Descartes’ “res cogitans” is not a computer.

If we represent the size of a coffee cup by the first mark on this scale, we will have to place 13 marks along the scale to arrive at the size of an atomic nucleus. We would then have to continue three times as far along the scale of size reductions by a factor of 10 to arrive at the Planck length λ. Quantum gravity has evolved around a new indeterminacy relation, Dx  Dy [ k2 : Here, the smallest elementary length, the Planck length, is on the right-hand side of the inequality. This indeterminacy relation would mean that it is not possible to measure a length more precisely than the Planck length.

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100 Chemical Myths: Misconceptions, Misunderstandings, Explanations by Lajos Kovács, Dezső Csupor, Gábor Lente, Tamás Gunda

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