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CGS unit of electric dipole moment
The debye (/dɪˈbaɪ/ dib-EYE, Dutch: [dəˈbɛiə]; symbol: D) is a CGS unit (a non-SI metric unit) of electric dipole moment named in honour of the physicist
Debye
Topics referred to by the same term
debye or Debye in Wiktionary, the free dictionary. The debye (symbol: D) is a unit of electric dipole moment named after physicist Peter J. W. Debye Debye
Debye_(disambiguation)
Dutch-American physical chemist (1884–1966)
Peter Joseph William Debye (/dɪˈbaɪ/ dib-EYE; born Petrus Josephus Wilhelmus Debije, Dutch: [ˈpeːtrʏz dəˈbɛiə]; March 24, 1884 – November 2, 1966) was
Peter_Debye
Method in physics
In thermodynamics and solid-state physics, the Debye model is a method developed by Peter Debye in 1912 to estimate phonon contribution to the specific
Debye_model
Model describing the departures from ideality in solutions of electrolytes and plasmas
The Debye–Hückel theory was proposed by Peter Debye and Erich Hückel as a theoretical explanation for departures from ideality in solutions of electrolytes
Debye–Hückel_theory
Measure of electrostatic effect and how far it persists
In plasmas and electrolytes, the Debye length λ D {\displaystyle \lambda _{\text{D}}} (Debye radius or Debye–Hückel screening length), is a measure of
Debye_length
Mathematical function
In mathematics, the family of Debye functions is defined by D n ( x ) = n x n ∫ 0 x t n e t − 1 d t . {\displaystyle D_{n}(x)={\frac {n}{x^{n}}}\int _{0}^{x}{\frac
Debye_function
P. J. W. Debye. Debye – a unit of electric dipole moment Debye–Falkenhagen effect Debye–Hückel equation Debye–Hückel limiting law, see Debye–Hückel equation
List of things named after Peter Debye
List_of_things_named_after_Peter_Debye
Electrochemical effect
applied voltage has a very high frequency is known as Debye–Falkenhagen effect, named after Peter Debye and Hans Falkenhagen who published about it 1928.
Debye–Falkenhagen_effect
Damping of electric fields
electric-field screening is also called Debye screening or shielding. It manifests itself on macroscopic scales by a sheath (Debye sheath) next to a material with
Electric-field_screening
Plasma layer with a positive charge
The Debye sheath (also electrostatic sheath) is a layer in a plasma which has a greater density of positive ions, and hence an overall excess positive
Debye_sheath
Force of attraction or repulsion between molecules and neighboring particles
force Cation–π, σ–π and π–π bonding Van der Waals forces – Keesom force, Debye force, and London dispersion force Cation–cation bonding Salt bridge (protein
Intermolecular_force
Model of a crystalline solid
oscillators of the same frequency. The independence assumption is relaxed in the Debye model. While the model provides qualitative agreement with experimental
Einstein_solid
Electrically insulating substance able to be polarised by an applied electric field
pp. 231–232, 348–349. Debye, P. (1913), Ver. Deut. Phys. Gesell. 15, 777; reprinted 1954 in collected papers of Peter J.W. Debye. Interscience, New York
Dielectric
Scattering of an electromagnetic plane wave by a sphere
Maxwell's equations (also known as the Lorenz–Mie solution, the Lorenz–Mie–Debye solution or Mie scattering) describes the scattering of an electromagnetic
Mie_scattering
Rayleigh–Gans approximation, also known as Rayleigh–Gans–Debye approximation and Rayleigh–Gans–Born approximation, is an approximate solution to light
Rayleigh–Gans_approximation
The Peter Debye Award in Physical Chemistry is awarded annually by the American Chemical Society "to encourage and reward outstanding research in physical
Peter_Debye_Award
Concept in crystallography
The Debye–Waller factor (DWF), named after Peter Debye and Ivar Waller, is used in condensed matter physics to describe the attenuation of x-ray scattering
Debye–Waller_factor
German-born theoretical physicist (1879–1955)
mechanics could solve the specific heat problem in classical mechanics. Peter Debye refined this model. In 1924, Einstein received a description of a statistical
Albert_Einstein
Norwegian-American physical chemist and theoretical physicist (1903-1976)
Peter Debye was teaching, and confronted Debye, telling him his theory was wrong. He impressed Debye so much that he was invited to become Debye's assistant
Lars_Onsager
Molecular interface between a surface and a fluid
and electroosmotic flow. The characteristic thickness of the DL is the Debye length, κ−1. It is reciprocally proportional to the square root of the ion
Double layer (surface science)
Double_layer_(surface_science)
Technique in physical chemistry
be neglected (P(θ)→1). Therefore, the Zimm equation is simplified to the Debye equation, as follows: K c Δ R ( θ , c ) = 1 M w + 2 A 2 c {\displaystyle
Static_light_scattering
Function in thermodynamics and statistical physics
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Partition function (statistical mechanics)
Partition_function_(statistical_mechanics)
Thermodynamic extension of Debye–Hückel theory
and water activities in solutions of high ionic strength for which the Debye–Hückel theory is no longer adequate. They are more rigorous than the equations
Pitzer_equations
Empirical extension of Debye–Hückel theory
The Davies equation is an empirical extension of Debye–Hückel theory which can be used to calculate activity coefficients of electrolyte solutions at
Davies_equation
Diffraction grating produced by interfering ultrasonic waves
\theta } where ν {\displaystyle \nu } is the frequency of the wave. The Debye–Sears method determines the wavelength of monochromatic light using an acoustic
Ultrasonic_grating
Relaxation model
When α = 0 {\displaystyle \alpha =0} , the Cole-Cole model reduces to the Debye model. When α > 0 {\displaystyle \alpha >0} , the relaxation is stretched
Cole–Cole_equation
Quantification of the electrical interactions between ions in solution
colloids and other heterogeneous systems. That is, the Debye length, which is the inverse of the Debye parameter (κ), is inversely proportional to the square
Ionic_strength
Theorem on magnetism
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Bohr–Van_Leeuwen_theorem
Dutch writer, scientist and entrepreneur (born 1969)
Peter Debye, whom Einstein believed to be serving the Third Reich more than he considered ethically correct. Rispens cited a memo written by Debye during
Sybe_I._Rispens
Measure of the ability of a solution containing electrolytes to conduct electricity
Onsager gave a theoretical explanation of Kohlrausch's law by extending Debye–Hückel theory. Conductivity of low- and non-polar solutions is very low
Conductivity_(electrolytic)
Unit of electric quadrupole moment
10−26 statcoulomb-square centimetre. This is equivalent to 1 debye-angstrom, where 1 debye = 10−18 statcoulomb-centimetre is the CGS unit of molecular
Buckingham_(unit)
Canadian-born American chemist and Nobel laureate (1923–2026)
the Centenary Prize for 1988-1989, the Willard Gibbs Award and the Peter Debye Award in 1988, the National Medal of Science in 1989, Ohio State's William
Rudolph_A._Marcus
Scientific method to study solutions, gels, and other polymeric systems
of the structure can be carried out explicitly and result in a sort of Debye function: S D ( k → ) = 2 ( k R g ) 4 [ ( k R g ) 2 − 1 + e − ( k R g )
Polymer_scattering
German physical chemist and physicist (1896–1980)
soon became an assistant to Peter Debye at Zürich. It was there that he and Debye developed their theory (the Debye–Hückel theory, in 1923) of electrolytic
Erich_Hückel
State of matter
plasma parameter Λ, representing the number of charge carriers within the Debye sphere is much higher than unity. It can be readily shown that this criterion
Plasma_(physics)
Topics referred to by the same term
Double layer may refer to: Double layer (biospecific), the surface where two different phases of matter are in contact Double layer (plasma physics), a
Double_layer
Behaviour of metals at low temperatures
scattering of conduction electrons by lattice vibrations (phonons) below Debye temperature. The theory was initially put forward by Felix Bloch in 1930
Bloch–Grüneisen_law
Belgium academic gatherings since 1911
Jules-Émile Verschaffelt, Hendrik Kramers (scientific committee – absent) Peter Debye, Abram Fedorovich Ioffé, Albert Einstein, Frédéric Joliot-Curie (speakers)
Solvay_Conference
Measure of positive and negative charges
The SI unit for electric dipole moment is the coulomb-metre (C⋅m). The debye (D) is a CGS unit of measurement used in atomic physics and chemistry. Theoretically
Electric_dipole_moment
Debye sphere (a sphere of radius the Debye length). This definition of the plasma parameter is more frequently (and appropriately) called the Debye number
Plasma_parameter
Swiss physicist (1890–1969)
while still working on his dissertation, he and his tutor, Peter Debye, developed the "Debye–Scherrer powder method", a procedure using X-rays for the structural
Paul_Scherrer
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Sznajd_model
Measure of a substance's ability to resist or conduct electric current
the Debye length there can be charge imbalance. In the special case that double layers are formed, the charge separation can extend some tens of Debye lengths
Electrical resistivity and conductivity
Electrical_resistivity_and_conductivity
Theorem in quantum mechanics
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Spin–statistics_theorem
Peter Debye, who applied Albert Einstein's theory of translational Brownian motion to the rotation of molecules having permanent electric dipoles. Debye ignored
Rotational_Brownian_motion
German theoretical physicist (1868–1951)
Sommerfeld's doctoral students, Werner Heisenberg, Wolfgang Pauli, Peter Debye and Hans Bethe, went on to win Nobel Prizes, while others, most notably
Arnold_Sommerfeld
Dutch condensed matter physicist
is a Dutch condensed matter physicist. She works as a professor at the Debye Institute for Nanomaterials Science at Utrecht University, in the Soft Condensed
Marjolein_Dijkstra
typically water. This force acts over distances that are comparable to the Debye length, which is on the order of one to a few tenths of nanometers. The
Double_layer_forces
Motion of charged particles in electric field
limitations on its validity. For instance, it does not include Debye length κ−1 (units m). However, Debye length must be important for electrophoresis, as follows
Electrophoresis
Statistical mechanics theorem relating non-equilibrium work to free energy differences
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Crooks_fluctuation_theorem
Mathematical model of ferromagnetism in statistical mechanics
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Ising_model
American physicist (1898–1975)
In 1932 he collaborated with Peter Debye, who was then visiting MIT, in the discovery of what is now called the Debye–Sears effect, the diffraction of light
Francis_Sears
Ensemble of states at constant pressure
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Isothermal–isobaric_ensemble
Statistical description for the behavior of fermions
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Fermi–Dirac_statistics
Interactions between groups of atoms that do not arise from chemical bonds
the London dispersion forces between "instantaneously induced dipoles", Debye forces between permanent dipoles and induced dipoles, and the Keesom force
Van_der_Waals_force
Theoretical model for aggregation and stability of aqueous dispersions
Peter Debye and Erich Hückel reported the first successful theory for the distribution of charges in ionic solutions. The framework of linearized Debye–Hückel
DLVO_theory
Lunar impact crater
Debye is a degraded lunar impact crater that is located in the northern hemisphere on the Moon's far side, as seen from the Earth. It lies to the south
Debye_(crater)
American chemist (born 1934)
United States National Academy of Sciences in 1978. He won the 1982 Peter Debye Award from the American Chemical Society, followed in 1989 by the Irving
Peter_M._Rentzepis
German physicist (1901–1976)
Sommerfeld: Heisenberg, who had received the Nobel Prize in Physics; Peter Debye, who had received the Nobel Prize in Chemistry in 1936; and Richard Becker
Werner_Heisenberg
Physics of many interacting particles
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Statistical_mechanics
Empirical thermodynamic law
observed decrease of the heat capacity at low temperatures in diamond. Peter Debye followed in 1912 with a new model based on Max Planck's photon gas, where
Dulong–Petit_law
Model in electromagnetism
relaxation is an empirical modification of the Debye relaxation model in electromagnetism. Unlike the Debye model, the Havriliak–Negami relaxation accounts
Havriliak–Negami_relaxation
American theoretical chemist
Institute of Technology Awards Feynman Prize in Nanotechnology (2008) Peter Debye Award (2010) Irving Langmuir Award (2016) Scientific career Fields reaction
George_C._Schatz
Electric charges present on the surface of a solid
{\displaystyle x} , and λ D {\displaystyle \lambda _{D}} is defined as the Debye length. Which leads to the simple expression: σ = ε ε 0 ψ 0 λ D {\displaystyle
Surface_charge
Concept in Electrochemistry
macrosystem, the Debye-length is quite small. Due to the screening effect almost all of the potential drop is confined within the small Debye-length region
Virtual_breakdown_mechanism
Surname list
Variant spellings include De Bij, De Bije, De By, De Bye, DeBie, Debije and Debye. People with this name include: De Bie Adriaen de Bie (1593–1668), Flemish
De_Bie
Supposition or system of ideas intended to explain something
Lewis theory (successor to Brønsted–Lowry acid–base theory) — HSAB theory — Debye–Hückel theory — Thermodynamic theory of polymer elasticity — Reptation theory
Theory
Statistical-mechanical ensemble
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Isoenthalpic–isobaric ensemble
Isoenthalpic–isobaric_ensemble
Particle together with excitations from other fields
In radiobiology, a dressed particle is a bare particle together with its Debye sphere that neutralizes its electric charge. Constituent quark Hopfield
Dressed_particle
Understanding of gas properties in terms of molecular motion
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Kinetic_theory_of_gases
Temperature at which a solid turns liquid
{4\pi ^{2}m\nu ^{2}c^{2}a^{2}}{2k_{\rm {B}}}}.} From the expression for the Debye frequency for ν, T m = 2 π 2 m c 2 a 2 θ D 2 k B h 2 {\displaystyle T_{\rm
Melting_point
Method to estimate ion activity coefficients in solution
when their concentrations are too high to be predicted accurately by the Debye–Hückel theory. Activity coefficients are needed because an equilibrium constant
Specific ion interaction theory
Specific_ion_interaction_theory
Elementary particle or quantum of light
Einstein's later work searching for a more complete theory. In 1910, Peter Debye derived Planck's law of black-body radiation from a relatively simple assumption
Photon
Quasiparticle form phonon and photon coupling
material Liquid crystal Polymer Scientists Van der Waals Onnes von Laue Bragg Debye Bloch Onsager Mott Peierls Landau Luttinger Anderson Van Vleck Hubbard Shockley
Phonon_polariton
British physicist (1875–1958)
studying the electrical conductivity of electrolytes. He is best known for the Debye-Milner Plasma Theory. Milner was born in Dodsworth, a village near Barnsley
Samuel_Milner
States of matter for water as a solid
range) 1.1 GPa (formation from liquid water) 1.31 g/cm3 Tetragonal Exhibits Debye relaxation. Ice VII 1937 355 K (82 °C) (formation from ice VI) 2.2 GPa (formation
Phases_of_ice
Fluid which flows without losing kinetic energy
material Liquid crystal Polymer Scientists Van der Waals Onnes von Laue Bragg Debye Bloch Onsager Mott Peierls Landau Luttinger Anderson Van Vleck Hubbard Shockley
Superfluidity
Bates–Guggenheim Convention refers to a conventional method based on the Debye–Hückel theory to determine pH standard values. Paul De Bièvre; Helmut Günzler
Bates–Guggenheim_Convention
Calculation involving electrolyte solutions
electrolyte solutions whose concentrations are above the range of validity of the Debye–Hückel equation. This equation, together with Specific ion interaction theory
Bromley_equation
Continuum solvent model for biomolecular simulations
is based on the classic theory of polar liquids, as developed by Peter Debye and corrected by Lars Onsager to incorporate reaction field effects. The
Screened Coulomb potentials implicit solvent model
Screened_Coulomb_potentials_implicit_solvent_model
Magnetic property of ordinary materials
material Liquid crystal Polymer Scientists Van der Waals Onnes von Laue Bragg Debye Bloch Onsager Mott Peierls Landau Luttinger Anderson Van Vleck Hubbard Shockley
Diamagnetism
Taiwanese chemist and Nobel Laureate
Fairchild Distinguished Scholar (1983); Harrison Howe Award (1983); Peter Debye Award (1986); National Medal of Science (1986); Golden Plate Award of the
Yuan_T._Lee
Public university in Aachen, Germany
Nobel laureate Peter Debye received a degree in electrical engineering from RWTH Aachen and is known for the Debye model and Debye relaxation. Paul Deurenberg
RWTH_Aachen_University
American chemist (born 1955)
Herbert P. Broida Prize in 2013, the Bourke Award in 2018 and the Peter Debye Award in 2019. He is an Elected Fellow of the American Association for the
Daniel_Neumark
German physicist and electrochemist
1971) was a German physicist and electrochemist best known for eponymous Debye–Falkenhagen effect. 1955 he became a regular member of the German Academy
Hans_Falkenhagen
Notion in statistical mechanics
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Parastatistics
Class of materials
material Liquid crystal Polymer Scientists Van der Waals Onnes von Laue Bragg Debye Bloch Onsager Mott Peierls Landau Luttinger Anderson Van Vleck Hubbard Shockley
Spin_gapless_semiconductor
Type of ion in aqueous solutions
CO2−3(aq) + Cu2+(aq) → CuCO3(s) Spectator ion concentration only affects the Debye length. In contrast, potential determining ions, whose concentrations affect
Spectator_ion
German scientific institution
whose ranks included the physicists and chemists Walther Bothe, Peter Debye, Albert Einstein, Fritz Haber and Otto Hahn; a board of trustees also provided
Kaiser_Wilhelm_Society
American physicist
Chemical Engineers (AIChE), Materials Research Society (MRS) 2025 Peter Debye Award for Physical Chemistry, American Chemical Society 2025 Irving Langmuir
Sharon_Glotzer
Separation of electric charge in a molecule
practical on the molecular scale. Bond dipole moments are commonly measured in debyes, represented by the symbol D, which is obtained by measuring the charge
Chemical_polarity
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
List of textbooks in thermodynamics and statistical mechanics
List_of_textbooks_in_thermodynamics_and_statistical_mechanics
Ionic Atmosphere is a concept employed in Debye–Hückel theory which explains the electrolytic conductivity behaviour of solutions. It can be generally
Ionic_atmosphere
Symmetry breaking through the vacuum state
Grand canonical NPH Isoenthalpic–isobaric NPT Isothermal–isobaric Models Debye Einstein Ising Potts Potentials Internal energy Enthalpy Helmholtz free
Spontaneous_symmetry_breaking
Swedish theoretical physicist (1898–1991)
lattice vibrations of a crystal, building upon the prior work of Peter Debye. The Debye–Waller factor, which he introduced in his doctoral thesis in 1925,
Ivar_Waller
Polish-American physical chemist (1887–1975)
Fajans at the Bunsen Congress, Munich, 1928. Pictured with Peter Debye, Fritz London, Friedrich Hund, Alwin Mittasch, and Oskar von Miller
Kazimierz_Fajans
Dynamics of fluids confined in nanoscale structures
because the characteristic physical scaling lengths of the fluid, (e.g. Debye length, hydrodynamic radius) very closely coincide with the dimensions of
Nanofluidics
American theoretical chemist
(1997), the Spiers Medal of the Royal Society of Chemistry (1998), the Peter Debye Award in Physical Chemistry (2003), the Welch Award in Chemistry (2007)
William_Hughes_Miller
Nobel prize winning American chemical physicist (born 1953)
American Physical Society, 2009; Pittsburgh Spectroscopy Award, 2012; Peter Debye Award in Physical Chemistry, American Chemical Society, 2013; the Engineering
William_E._Moerner
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