In particular, it is shown that the presence of the electric field cancels the quantum numbers selection rules at the field direction, whereas in radial direction the selection rules are preserved.
"The experiments reproduce the characteristic properties of the sought quantum natural selection scenario," say Alvarez-Rodriguez and co.
The factors that determine the spectral region in which an electronic transition lies (i.e., the colour of the material) will be the energy separation between the MOs and the allowed quantum mechanical selection rules.
These intra-4f electronic transitions of lanthanide ions are electric dipoles forbidden by quantum mechanical selection rules, which, however, are relaxed due to local crystal field-induced intermixing of the f states with higher electronic configurations.
This can be observed repeatedly in the history of science: Each time a major new concept such as quantum mechanics, natural selection, or the asteroid extinction of the dinosaurs emerged, opposition was often the fiercest from those who were "experts" in the field.
Kim, Y. et al. Selection of quantum dot wavelength for biomedical assays and imaging.
However, for certain changes in the quantum numbers, summarized as selection rules, there is a finite probability.
A multi-dimensional model of quantum evolution by adaptive selection has been established for cancer biology.
In the same way, scientists are unlikely to discover anything surpassing the Big Bang, quantum mechanics, relativity, natural selection, or DNA-based genetics.
The general theory of relativity, quantum mechanics and natural selection all solved hard problems by combining hitherto unrelated concepts – non-Euclidean geometry and gravity, probability and mechanics, density regulation with environmental selection.
