Electricmagnetic

Electricmagnetic is not a formal term in physics; it is sometimes used informally to refer to the intertwined nature of electric and magnetic phenomena, collectively described by the science of electromagnetism. Electromagnetism studies how electric charges and currents produce electric and magnetic fields, and how those fields interact and propagate. Changing electric fields generate magnetic fields, and changing magnetic fields induce electric fields, as captured by Maxwell's equations. In matter and in vacuum, these fields can store, transfer, and convert energy.

Classical electromagnetism describes phenomena from static fields to waves. Light is an electromagnetic wave: oscillating electric and magnetic fields propagate through space at the speed of light. The equations predict phenomena such as electromagnetic induction, radio transmission, and optical refraction.

Quantum electromagnetism or quantum electrodynamics treats the electromagnetic field as quantized, with photons mediating interactions. This framework provides extremely accurate predictions for processes at atomic scales and underpins modern electronics and optics.

Applications of electromagnetic theory span electricity generation and distribution, motors and transformers, wireless communication, radar, microwaves, and medical imaging. The field underlies technologies from power grids to smartphones and from MRI machines to optical fibers, reflecting a fundamental unity between electric and magnetic phenomena in both theory and practice.