Electromagnetism

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3 domain-specific abstractions whose origin domain is Electromagnetism.

• Coulomb's law — Relate the electrostatic force between ideal point charges to the product of their charges and the inverse square of their separation, directed along the line joining them and modified by the medium.
• Electromagnetic Spectrum — The ordered physical coordinate space of electromagnetic radiation, locating every component by frequency and equivalently by vacuum wavelength or photon energy while conventional bands summarize typical sources, detectors, propagation, and matter interactions.
• Poynting Vector — The local electromagnetic energy-flux density whose surface-normal integral gives electromagnetic power crossing a boundary and whose divergence closes the field-energy balance.