Physical field composed of two interconnected, mutually orthogonal fields, an electric field and a magnetic field, which mediates interactions of charged, dipolar and multipolar objects.
Note:
The electromagnetic field produced by one charged or polar object affects other charged or polar objects, which is the essence of electromagnetic interaction - one of the four basic forces in nature.
Source:
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 27 (https://doi.org/10.1515/pac-2020-0501)