Physics
Articles about matter, energy, forces and physical laws.
Bell's theorem
Bell's theorem: implications for quantum mechanics and hidden variables
Bernoulli's principle
Principle in fluid dynamics relating pressure, velocity and energy for ideal flow: higher fluid speed corresponds to lower static pressure along a streamline under specified assump
Beta decay
Beta ferrite
Beta particle
Beta particle (β): electrons and positrons emitted in radioactive decay
Birefringence
Birefringence (double refraction): causes, properties, and applications
Blackbody radiation
Blast injury
Blast injury: causes, classification, effects and clinical management
Bohr model
Bohr model of the atom
Boltzmann constant
Bomb
Bomb (explosive device)
Born's rule
Bose gas
Bose gas: quantum ideal gas of bosons and Bose–Einstein condensation
Bose-Einstein statistics
Bose–Einstein statistics: occupancy rules and physical consequences
Bose–Einstein statistics describe how indistinguishable bosons occupy energy states, the distribution formula, historical origin, physical examples (photons, BECs) and limits compa
Bose–Einstein condensate
Bose–Einstein condensate (BEC)
Boson
Bottom quark
Bottom quark (beauty): properties, role in particle physics, and applications
Boyle's law
Boyle's law — the inverse pressure–volume relation for gases
British thermal unit
Brownian motion
Bulk modulus
Bulk modulus (measure of resistance to uniform compression)
Bullet-proof glass
Bullet‑proof glass (bullet‑resistant glazing): construction, uses, and limits
Buoyancy
Butterfly effect
Butterfly effect: sensitive dependence and consequences in complex systems
Calorie
Calorie (unit of energy)
Candela
Capacitance
Capacitance: definition, principles, history, and practical uses
Capacitance measures an object's ability to store electric charge per unit voltage. This article explains basic formulas, physical origins, common types of capacitors, and typical
Capacity
Capillary action
Carat (mass)
Carat (unit of mass)
Celsius
Celsius (temperature scale)
Center of mass
Center of Mass (Barycenter): Definition, Calculation, and Applications
Centimetre-gram-second system of units
Centimetre–gram–second (CGS) system of units
Centripetal force
Centripetal force: causes, formula, examples, and relation to centrifugal force
Charge
Charge — meanings in physics, law, warfare, finance, and everyday use
Charge conjugation
Charm quark
Charm quark (c quark)
Cherenkov radiation
Classical mechanics
Classical mechanics: laws, scope, and applications
Classical physics
Classical physics: principles, scope, history and limits
Closed system
Closed system (thermodynamics)
Coefficient of friction
Coefficient of thermal expansion
Coherence (physics)
Cold fusion
Cold fusion — the low‑temperature fusion hypothesis
Collimated light
Collision
Collision (Physics): Types, Principles, and Examples