Terms starting with B
44 terms · page 2 of 2
Bohm Sheath Criterion
A fundamental boundary condition stating that positive ions entering a non-neutral plasma sheath must enter with a velocity at or exceeding…
Quantum & Atomic PhysicsBohr Model
An early semi-classical atomic model proposing that electrons orbit the atomic nucleus only in discrete stationary orbits with quantized…
Foundations of PhysicsBoltzmann Constant
The fundamental constant that converts thermodynamic temperature into microstate kinetic energy per particle.
Biophysics & Medical PhysicsBone Mechanics
The study of mechanical structural behavior, anisotropy, and remodeling of bone tissue under physical loads.
Plasma PhysicsBootstrap Current
A self-generated toroidal electric current in a tokamak plasma driven by trapped particle banana orbits in steep pressure gradients.
Quantum & Atomic PhysicsBose-Einstein Condensate (BEC)
A state of matter formed by bosons cooled close to absolute zero, where a macroscopic fraction of particles collapse into the lowest…
Quantum & Atomic PhysicsBosons
Subatomic particles possessing integer intrinsic spin that obey Bose-Einstein statistics and do not obey the Pauli Exclusion Principle.
Mathematical & Computational PhysicsBoundary Value Problem
A differential equation together with a set of additional constraints, called boundary conditions, specified at the boundaries of the…
Thermodynamics & Statistical PhysicsBoyle's Law
An ideal gas law stating that pressure is inversely proportional to volume at constant temperature.
Biophysics & Medical PhysicsBrachytherapy
An internal radiation therapy technique where sealed radioactive sources are placed directly inside or adjacent to a tumor.
Quantum & Atomic PhysicsBragg's Law
The mathematical condition for constructive interference of waves scattered from parallel atomic lattice planes in a crystal.
Nuclear & Particle PhysicsBreeder Reactor
A specialized nuclear reactor designed to generate more fissile nuclear fuel than it consumes during operation.
Plasma PhysicsBremsstrahlung Radiation in Plasma
Continuous electromagnetic radiation emitted when free plasma electrons undergo deceleration scattering off positive ions.
OpticsBrewster's Law
The law stating that reflected light is 100% linearly polarized when the angle of incidence equals the polarizing angle, where reflected…
Condensed Matter & Materials PhysicsBrillouin Zone
The uniquely defined fundamental primitive cell in reciprocal wavevector k-space containing all unique electronic and vibrational wave…
Astrophysics, Cosmology & RelativityBrown Dwarf
A substellar object intermediate in mass between giant gas planets and low-mass stars, incapable of sustaining stable core hydrogen fusion.
Thermodynamics & Statistical PhysicsBrownian Motion
The random, erratic wandering movement of microscopic particles suspended in a fluid caused by relentless collisions with fast-moving fluid…
Condensed Matter & Materials PhysicsBulk Modulus
A mechanical material property measuring a solid or fluid's resistance to uniform volumetric compression under applied hydrostatic pressure.
Classical MechanicsBuoyancy
The net upward fluid force exerted on an object immersed in a fluid due to pressure difference between top and bottom.
Plasma PhysicsBurning Plasma & Alpha Heating
The state of a fusion plasma where thermal heating from 3.5 MeV alpha particles produced in Deuterium-Tritium fusion reactions becomes the…