Electromagnetism

Fundamental interaction between charged particles

Follow Electromagnetism on Notably News to receive short updates to your email — rarely!

We include updates on Voltage, Maxwell's equations, Electric current, Magnetic field, Photon, Coulomb's law, Electric charge, Vacuum permittivity, Electric field, Lorentz force, Electric potential, Electromotive force, Capacitance, Inductance, Stokes' theorem, Electromagnetic field ... and more.

2022
Coulomb's law
CODATA recommended a new value for the vacuum electric permittivity (ε₀), which was used to calculate the updated Coulomb constant (kₑ) of 8.987551786 × 10^9 N·m²·C⁻².
2022
Zilch
First comprehensive answer discovered regarding the symmetries of the standard Maxwell action underlying the conservation of all zilches, revealing a hidden invariance algebra of free Maxwell equations.
2022
IEEE Transactions on Terahertz Science and Technology
Journal received an impact factor of 3.2 according to the Journal Citation Reports.
February 2022
Neutron electric dipole moment
The n2EDM apparatus of the nEDM collaboration was being set up at the Paul Scherrer Institute (PSI), with neutron commissioning expected in late 2022.
2020
Neutron electric dipole moment
Latest best limit of neutron electric dipole moment published by the nEDM collaboration at Paul Scherrer Institute (PSI).
2020
Zilch
Aghapour, Andersson, and Rosquist emphasized the open mathematical question about zilch symmetries and found symmetries of the duality-symmetric Maxwell action.
2018
Zilch
Physical interpretation of zilches for topologically non-trivial electromagnetic fields was investigated.
2015
Neutron electric dipole moment
Revision of the previous best upper limit for neutron electric dipole moment.
2015
Neutron electric dipole moment
Revision of the 2006 neutron electric dipole moment upper limit measurement.
2013
Neutron electric dipole moment
The Cryogenic neutron EDM experiment (CryoEDM) at the Institut Laue-Langevin ceased its development activities.
2013
Zilch
Philbin provided an answer to the symmetry question specifically for optical chirality using Noether's theorem.
2012
Zilch
A new physical insight was offered about optical chirality, explaining its relationship to the curl or time derivative of the electromagnetic field.

This contents of the box above is based on material from the Wikipedia articles Zilch (electromagnetism), IEEE Transactions on Terahertz Science and Technology, Coulomb's law & Neutron electric dipole moment, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.

See Also