Physics
Articles about matter, energy, forces and physical laws.
Statistical mechanics
Statistical mechanics: connecting microscopic states to macroscopic behavior
Statistical physics
Statistical Physics: Principles, Methods, and Applications
Stefan–Boltzmann law
Sterile neutrino
Stevens' power law
Stone (unit)
Stopping power
Stopping power (firearms and ammunition)
Strange matter
Strange quark
Stress (mechanics)
Stress (mechanics): definition, types, measurement, and engineering use
String (physics)
String (theoretical physics)
String theory
String theory and its role in modern physics
String theory is a theoretical framework proposing one-dimensional strings as the basic constituents of matter and forces, aiming to reconcile quantum mechanics and gravity and to
Strong interaction
Subatomic particle
Subatomic particle: definition, classification, history, and significance
Sunlight
Sunlight: Nature, Effects, and Importance
Superconductor
Superfluidity
Superfluidity: frictionless flow and quantum fluids
Superposition principle
Supersonic
Supersonic (speeds faster than the speed of sound)
Supersymmetry
Supersymmetry: theory, motivations, and experimental status
Surface tension
Surface Tension: Causes, Effects, Measurement, and Applications
Surface wave
Surface wave (physics and applications)
Synchrotron
Synchrotron (circular particle accelerator)
Tachyon
Tachyon: Hypothetical Faster‑Than‑Light Particle
Tau lepton
Tau lepton (tauon): the heavy third‑generation charged lepton
Tau neutrino
Teleportation
Temperature
Tension (mechanics)
Tension (mechanics): definition, properties, and applications
Terajoule
Terajoule (TJ) — unit of energy
Terminal velocity
Tesla (unit)
Tevatron
Tevatron: Fermilab’s Circular Proton–Antiproton Collider
The Force
The Force (Star Wars): concept, abilities, and cultural role
Theoretical particle
Theory of everything
Unified physical theories: approaches to combining general relativity and quantum mechanics
Theory of relativity
Thermal conductivity
Thermal conductivity: how materials transfer heat
Thermal expansion
Thermal physics
Thermal radiation
Thermal radiation: emission of heat as electromagnetic waves
Thermal resistance
Thermodynamic cycle
Thermodynamic cycle: principles, types, and applications
Thermodynamic entropy
Thermodynamic Entropy: Definition, Meaning, and Applications
Thermodynamic equilibrium
Thermodynamic potential
Thermodynamic potentials: definitions, common forms, and applications
An overview of thermodynamic potentials—energy-like functions (U, A, H, G, Ω), their natural variables, how they are formed via Legendre transforms, and their roles in equilibrium
Thermodynamic state
Thermodynamic state: definition, properties, and significance
Thermodynamic system
Thermodynamic system: definition, types, properties, and applications