Physics

Articles about matter, energy, forces and physical laws.

Articles in this category: 687 Updated: April 29, 2026 Page 4 / 15

Electric arc

Electric charge

Electric charge

Electric charge is a fundamental property of matter carried by subatomic particles; it determines electromagnetic interactions, governs static electricity and electric currents, an

Electric current

Electric field

Electric field: concept, laws, history and practical applications

Electric flux

Electric Flux: Definition, Surface Integrals, Units, and Relation to Gauss's Law

Electric potential

Electric power

Electric power: definition, units, and applications

Electrical conductivity

Electrical conductor

Electrical energy

Electrical energy: definition, units, storage, and applications

Electrical filament

Electrical filament: function, materials, history, and uses

Electrical impedance

Electrical resistance

Electrical Resistance: Definition, Causes, Laws, and Practical Roles

Electricity

Electricity: Principles, Generation, Transmission, Uses, and Safety

Electrocution

Electrocution: causes, effects, prevention, and history

Electroluminescence

Electromagnetic induction

Electromagnetic radiation

Electromagnetic spectrum

Electromagnetism

Electron

Electron

Electron: properties, history, behavior and applications

A concise encyclopedia entry on the electron: its identity as an elementary charged particle, discovery, role in atoms and electricity, key properties and major uses in science and

Electron cloud

Electron cloud (atomic orbital model)

Electron hole

Electron hole (quasiparticle in solids)

Electronvolt

Electrostatics

Elementary particle

Elementary particle

A concise, neutral overview of elementary (fundamental) particles: definitions, classification, key properties, historical development, examples and their roles in physics.

Ell

Ell (unit of length)

Energy

Energy

Energy: concepts, forms, history, and uses

Energy is the capacity to produce change or do work. This article explains physical definitions, common forms, conservation laws, resources, conversion and storage, applications, a

Energy level

Energy transfer

Entanglement

Entropy

Entropy

EPR paradox

Equilibrium

Erg

Escape velocity

Event horizon

Exciton

Exciton: the electron–hole quasiparticle in solids

Exotic atom

Exotic atom — atoms with unusual constituent particles

Explosion

Explosion (rapid energy release)

Fahrenheit

Fall (motion)

Farad

Farad (F): the SI unit of electrical capacitance

Faraday cage

Faraday cage: principles, history, and practical uses

Faraday's law of induction

Femtosecond

Femtosecond: the 10⁻¹⁵ second and ultrafast phenomena

Fermi-Dirac statistics

Fermi-Dirac statistics

Fermilab

Fermilab (Fermi National Accelerator Laboratory)