The rotational spectra of non-polar molecules cannot be observed by those methods, but can be observed and measured by Raman spectroscopy.
42.
These forces dominate the interaction of non-polar molecules, and are often more significant than Keesom and Debye forces in polar molecules.
43.
The Keesom interaction can only occur among molecules that possess permanent dipole moments a . k . a . two polar molecules.
44.
Since water is a polar molecule with partial positive charges on both hydrogen atoms, it is attracted to cell surfaces and membranes.
45.
Such polarization can be induced either by a polar molecule or by the repulsion of negatively charged electron clouds in non-polar molecules.
46.
Such polarization can be induced either by a polar molecule or by the repulsion of negatively charged electron clouds in non-polar molecules.
47.
Additionally, exometabolomics can be used to measure polar molecules being consumed or released by an organism, and to measure secondary metabolite production.
48.
The polar molecules of the dielectric align themselves to the direction of the electrostatic field, producing a permanent electrostatic " bias ".
49.
For polar molecules, this force is one part of the van der Waals force, along with forces between the permanent molecular dipole moments.
50.
There is also evidence for the asymmetric red dimer O = N O = N when nitric oxide is condensed with polar molecules.