2016年5月18日 · The Casimir effect and the Van der Waals force between two conducting plates are one and the same thing. To see this, consider the boundary conditions postulated for the Casimir effect. The electric field has to be exactly zero at the plates.

2016年8月30日 · The van der Waals force is a well-understood physical phenomena, as are electrostatics.When particles get down to a nanoscale size and separation, van der Waals forces can be very strong and become a dominant force for causing particles to adhere to each other to surfaces or each other.

2015年6月10日 · The van der Waals' forces are very weak. I said the hydrogen bond is extremely strong, but that is only compared to the other van der Waals' forces. Compared to say, a covalent bond, a hydrogen bond is approximately one tenth of that strength. The dipole-dipole bond is weaker still, and the dispersion forces are the weakest of Van De Waals' forces.

2024年5月28日 · On the Wikipedia article on van der Waals force, one of the contributions to intermolecular forces is. A repulsive component resulting from the Pauli exclusion principle that prevents close contact of atoms, or the collapse of molecules. Firstly, this only explains fermions. If the atom is a boson, it doesn’t apply.

2021年6月1日 · There are two kinds of Van der Waals forces: weak London Dispersion Forces and stronger dipole-dipole forces. The obvious question is why is gravity not counted as a Van der Waals force, to which the obvious answer is that at the molecular level gravity is so weak it is not worth considering.

the Casimir force is simply the (relativistic, retarded) van der Waals force between the metal plates. Another interpretation of Casimir force is that it is due to quantum vacuum. That same vacuum is said to produce inertia, according to. Inertia as a zero-point-field Lorentz force, Bernhard Haisch, Alfonso Rueda, and H. E. Puthoff, Phys. Rev

I came to know that the friction force actually depends on the surface contact area due to weak interactions (adhesion due to Van der Waals forces) between the atoms of both materials increasing in number with an area increase.

2018年8月10日 · Van der Waals is one of these forces, and is a distance-dependent interactions between atoms or molecules. Van der Waals is different than ionic or covalent bonds as they are not a result of a chemical electronic bond, and are comparatively weak and more susceptible to being perturbed. See Wikipedia - Van der Waals force for more details.

2024年1月29日 · Explanation of van der Waals force. 1. magnetic and electric interactions in atomic level. 0.

2019年6月26日 · Van der Waals force and hydrogen bonds only try to keep minimal surface (i.e. as spherical as possible). It's only gravity that tries to keep the minimal thickness of the water (as long as we neglect the attraction between the liquid and the solid surface it lies upon, otherwise there would be a fourth force).