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Physics experiment
In modern physics, the double-slit experiment demonstrates that light and matter can exhibit behavior associated with both classical particles and classical
Double-slit_experiment
Quantum physics thought experiment
delayed-choice experiment demonstrates that no particle-propagation model consistent with relativity explains quantum theory. Like the double-slit experiment, Wheeler's
Wheeler's delayed-choice experiment
Wheeler's_delayed-choice_experiment
Physics demonstrations of light interference
experiments played a major role in the acceptance of the wave theory of light. One such experiment was the original version of the modern double-slit
Young's interference experiment
Young's_interference_experiment
Physics experiment
experiment is a variation of Thomas Young's classic double-slit experiment. It establishes that when action is taken to determine which of two slits a
Quantum_eraser_experiment
Topics referred to by the same term
The double-slit experiment is a demonstration that light and matter can be modelled by both waves and particles. Slit experiment may also refer to: Young's
Slit experiment (disambiguation)
Slit_experiment_(disambiguation)
Interpretation of quantum mechanics
from quantum non-equilibrium to quantum equilibrium (ρ →|ψ|2). The double-slit experiment is an illustration of wave–particle duality. In it, a beam of particles
De_Broglie–Bohm_theory
Single-electron double-slit experiment
Council (CNR), the experiment is physically similar to a double-slit experiment with electrons described as a thought experiment by Richard Feynman in
Merli–Missiroli–Pozzi experiment
Merli–Missiroli–Pozzi_experiment
Physics experiment in quantum mechanics
delayed-choice experiment. The experiment was designed to investigate peculiar consequences of the well-known double-slit experiment in quantum mechanics
Delayed-choice_quantum_eraser
Complex number whose squared absolute value is a probability
described above. For example, in the classic double-slit experiment, electrons are fired randomly at two slits, and the probability distribution of detecting
Probability_amplitude
Concept in quantum optics
which classical fields suffice. Classical optical experiments like Young's double slit experiment and Mach-Zehnder interferometry are characterized only
Higher_order_coherence
Interpretation of quantum mechanics
Furthermore, versions of the experiment that include detectors at the slits find that each detected photon passes through one slit (as would a classical particle)
Copenhagen_interpretation
Similar behavior of quantum systems to droplets bouncing on a fluid
quantum double-slit experiment Pucci, Guiseppe; Harris, Daniel; Faria, Luiz; Bush, John (2018). "Walking droplets interacting with single and double slits".
Hydrodynamic_quantum_analogs
Fact that observing a situation changes it
this experiment. Despite the "observer effect" in the double-slit experiment being caused by the presence of an electronic detector, the experiment's results
Observer_effect_(physics)
Principle of quantum mechanics
a superposition of both states. The interference fringes in the double-slit experiment provide another example of the superposition principle. The theory
Quantum_superposition
Potential for two waves to interfere
interference patterns. For example, visibility of the double slit experiment pattern requires that both slits be illuminated by a coherent wave as illustrated
Coherence_(physics)
Scientific field of study
diagrammatic representation of the double‑slit experiment, illustrating wave‑particle duality. Particles passing through two slits and impinging on a surface
Physics
Description of physical properties at the atomic and subatomic scale
interference, which is often illustrated with the double-slit experiment. In the basic version of this experiment, a coherent light source, such as a laser beam
Quantum_mechanics
Far-field diffraction
from the source. In the double-slit experiment, the two slits are illuminated by a single light beam. If the width of the slits is small enough (less than
Fraunhofer_diffraction
2004 quantum mechanics experiment
experiment is a variation of the double-slit experiment in quantum mechanics, devised and carried out by Shahriar Afshar in 2004. In the experiment,
Afshar_experiment
Quantum mechanical waves describing matter
building up the diffraction pattern. A close copy of the famous double-slit experiment using electrons through physical apertures gave the movie shown
Matter_wave
Method of analysis applied to problems wave propagation
did not fully resolve all observations, such as the low-intensity double-slit experiment first performed by G. I. Taylor in 1909. It was not until the early
Huygens–Fresnel_principle
Electromagnetic quantum-mechanical effect in regions of zero magnetic and electric field
difference can be observed by placing a solenoid between the slits of a double-slit experiment (or equivalent). An ideal solenoid (i.e. infinitely long and
Aharonov–Bohm_effect
Interference pattern
physics, its manifestation is wave interference like that seen in the double-slit experiment and the beat phenomenon in acoustics. The term originates from moire
Moiré_pattern
Mathematical entity to describe the probability of each possible measurement on a system
dynamic variables. For example, the quantum state of an electron in a double-slit experiment would consist of complex values over the detection region and, when
Quantum_state
Process by which a quantum system takes on a definitive state
\rangle =\sum _{i}|c_{i}|^{2}=1.} As examples, individual counts in a double slit experiment with electrons appear at random locations on the detector; after
Wave_function_collapse
Interference phenomenon of waves
of Young's double-slit experiment, this would mean that if the transverse coherence length is smaller than the spacing between the two slits, the resulting
Diffraction
Quantum physics concept
and Zurek introduced an information-theoretic treatment of the double-slit experiment providing on approach to a quantiative model of complementarity
Complementarity_(physics)
Loss of quantum coherence
interest in decoherence stemmed from furthering Bohr's analysis of the double-slit experiment in his reply to the Einstein–Podolsky–Rosen paradox, work he had
Quantum_decoherence
Interpretation of quantum mechanics
can be illustrated by the double-slit experiment. When particles of light (or anything else) pass through the double slit, a calculation assuming wavelike
Many-worlds_interpretation
Non-mathematical introduction
elegant example of wave-particle duality is the double-slit experiment. In the double-slit experiment, as originally performed by Thomas Young in 1803
Introduction to quantum mechanics
Introduction_to_quantum_mechanics
with Thomas Young's discovery of wave interference of light by his double-slit experiment in 1801. The wave view did not immediately displace the ray and
History_of_quantum_mechanics
Phenomenon resulting from the superposition of two waves
respective paths. Prime examples of light interference are the famous double-slit experiment, laser speckle, anti-reflective coatings and interferometers. In
Wave_interference
German physicist (1930–2024)
double-slit experiment performed with beams of electrons, something previously thought to be unfeasible in practice. Jönsson conducted his experiment
Claus_Jönsson
Book by John Gribbin
by Christian Huygens’s wave theory. He introduces Thomas Young’s double-slit experiment. 2. Atoms discusses the history of atomic theory, and how Albert
In Search of Schrödinger's Cat
In_Search_of_Schrödinger's_Cat
Component of stress coplanar with a material cross section
parallel slits forms a network of linearly diverging fringes that seem to originate from the plane of the two slits (see double-slit experiment). As a particle
Shear_stress
English polymath (1773–1829)
context of water waves. With additional experiments, including the predecessor of the double-slit experiment, he demonstrated interference in the context
Thomas_Young_(scientist)
Thought experiment in quantum mechanics
Physics portal Basis function Cat state Complementarity (physics) Double-slit experiment Elitzur–Vaidman bomb tester Heisenberg cut Modal realism Observer
Schrödinger's_cat
Relation in quantum optics
distinguishability. This section reviews the mathematical formulation of the double-slit experiment. The formulation is in terms of the diffraction and interference
Wave–particle duality relation
Wave–particle_duality_relation
Japanese multinational engineering and electronics company
"The double-slit experiment with single electrons". Physics World. 16 (5): 20–21. doi:10.1088/2058-7058/16/5/24. Retrieved 2025-10-09. "Double-slit experiment :
Hitachi
The N-slit interferometer is an extension of the double-slit interferometer also known as Young's double-slit interferometer. One of the first known uses
N-slit_interferometer
Distance over which a wave's shape repeats
destructive interference used above for the double-slit experiment applies as well to the display of a single slit of light intercepted on a screen. The main
Wavelength
2024 video game
to Cathy and Ridel. At a café, Mark finds Louise performing the double-slit experiment with anomalous results. Those anomalies occur at "hotspots"—areas
Until_Then
Introductory article
as an electron is also described as a wave. For example, if the double-slit experiment is performed with electrons, then a wave-like interference pattern
Introduction_to_gauge_theory
Concept in quantum mechanics
quasiparticles. The electron double slit experiment is a textbook demonstration of wave–particle duality. A modern version of the experiment is shown schematically
Wave–particle_duality
Book by Brian Greene
mechanics. The double slit experiment is revisited. Many others are presented, such as John Archibald Wheeler's delayed-choice experiment and Marlan Scully's
The_Fabric_of_the_Cosmos
Hypothetical travel into the past or future
position later measured as in the double-slit experiment. Depending on how the idler photon is measured, the experimenter can either learn which of the two
Time_travel
Series of public disputes between physicists Niels Bohr and Albert Einstein
debates. Bell test experiments Bell's theorem Complementarity Copenhagen interpretation Double-slit experiment Einstein's thought experiments Invariant set
Bohr–Einstein_debates
Basic unit of quantum information
for example, responsible for quantum interference, as seen in the double-slit experiment. The probability amplitudes for the superposition state, | ψ ⟩ =
Qubit
Quantum mechanics thought experiment
contains something, without ever opening it. This experiment has its roots in the double-slit experiment and other, more complex concepts which inspired
Elitzur–Vaidman_bomb_tester
Cavendish experiment (1798): Henry Cavendish's torsion bar experiment measures the force of gravity in a laboratory. Double-slit experiment (c.1805):
List_of_experiments
Propagation of information or matter faster than the speed of light
a double slit experiment depends on the conditions of observation of a second photon entangled with the first. The characteristic of this experiment is
Faster-than-light
List of statements that appear to contradict themselves
mathematical probability theory? Double-slit experiment: Matter and energy can act as a wave or as a particle depending on the experiment. Einstein–Podolsky–Rosen
List_of_paradoxes
Interaction of a quantum system with a classical observer
measurement outcomes in the abstract as "detector clicks". The double-slit experiment is a prototypical illustration of quantum interference, typically
Measurement in quantum mechanics
Measurement_in_quantum_mechanics
Observable events that result from the interaction of light and matter
meet an obstruction Dispersion Double refraction or birefringence of calcite and other minerals Double-slit experiment Electroluminescence Evanescent
Optical_phenomenon
Fundamental interaction between charged particles
Abraham–Lorentz force Aeromagnetic surveys Computational electromagnetics Double-slit experiment Electrodynamic droplet deformation Electromagnet Electromagnetic
Electromagnetism
Physical model of propagating energy
waves. The duality nature of a real photon has been observed in the double-slit experiment. Together, wave and particle effects fully explain the emission
Electromagnetic_radiation
remains intact. Physicists at MIT perform an idealised atomic-scale double-slit experiment with single ultracold atoms and photons, showing light’s coherence
2025_in_science
Simplification of the basic trigonometric functions
tangent small-angle approximations are used in relation to the double-slit experiment or a diffraction grating to develop simplified equations like the
Small-angle_approximation
1801 – Thomas Young establishes the wave nature of light with his double-slit experiment. 1859 – Gustav Kirchhoff introduces the concept of a blackbody and
Timeline_of_quantum_mechanics
Theory in physics about the nature of light
century, beginning with Thomas Young's double-slit experiment in 1801, more evidence in the form of novel experiments on diffraction, interference, and polarization
Corpuscular_theory_of_light
Proposal to test the uncertainty principle of quantum mechanics
theoretically analyzed Popper's experiment and predicted that narrowing slit A would lead to momentum spread increasing at slit B. Kripps also argued that
Popper's_experiment
Category of disciplines and sub-disciplines in Physics
Davisson–Germer experiment Delayed-choice quantum eraser Double-slit experiment Eddington experiment Eötvös experiment Fizeau experiment Foucault pendulum
Experimental_physics
1922 physical experiment demonstrating that atomic spin is quantized
Ududec, Cozmin; Barnum, Howard; Emerson, Joseph (March 2011). "Three Slit Experiments and the Structure of Quantum Theory". Foundations of Physics. 41 (3):
Stern–Gerlach_experiment
Quantum explanation of electromagnetic polarization
momentum of light Quantum decoherence Stern–Gerlach experiment Wave–particle duality Double-slit experiment Spin polarization Allen, L.; Beijersbergen, M.W
Photon_polarization
Concept in Quantum mechanics
inherently statistical. For example, the electrons in a low-intensity double slit experiment arrive at random times and seemingly random places and yet eventually
Ensemble_interpretation
Historically important optical effect
published his double-slit experiment in 1807. The original Arago spot experiment was carried out a decade later and was the deciding experiment on the question
Arago_spot
Interpretation of quantum mechanics
groups: Interferometric experiments. They are refined versions of the double-slit experiment, showing the wave nature of matter (and light). The modern versions
Objective-collapse_theory
1999 book by Brian Greene
extraction of electrons from a metal by light. Greene uses the double-slit experiment to illustrate wave-particle duality of light. Louis de Broglie extended
The_Elegant_Universe
Book by Richard Feynman
The third lecture describes quantum phenomena such as the famous double-slit experiment and Werner Heisenberg's uncertainty principle, thus describing the
QED: The Strange Theory of Light and Matter
QED:_The_Strange_Theory_of_Light_and_Matter
American theoretical physicist (1911–2008)
These experiments seek to discover whether light somehow "senses" the experimental apparatus that it travels through in the double-slit experiment, adjusting
John_Archibald_Wheeler
Textbook by Richard Feynman
volume covers quantum mechanics; for example, it shows how the double-slit experiment demonstrates the essential features of quantum mechanics. The book
The Feynman Lectures on Physics
The_Feynman_Lectures_on_Physics
Mathematical explanation of far field diffraction
through Young's interference experiment, and secondly because of its role as a thought experiment in the double-slit experiment in quantum mechanics. Assume
Fraunhofer diffraction equation
Fraunhofer_diffraction_equation
Diffraction pattern in optics
the same wavelength that interfere with each other. The famous double slit experiment showed that diffraction patterns could arise even when the coherent
Airy_disk
Particular solutions to the electromagnetic wave equation
the articles on photon polarization and photon dynamics in the double-slit experiment. Experimentally, every light signal can be decomposed into a spectrum
Sinusoidal plane-wave solutions of the electromagnetic wave equation
Sinusoidal_plane-wave_solutions_of_the_electromagnetic_wave_equation
Application of quantum theory mathematics to cognitive phenomena
effect in a manner similar to the explanation for the results from double-slit experiment in quantum physics. Similar violations of the sure-thing principle
Quantum_cognition
Danish family of scientists, scholars and amateur sportsmen
"pilot waves" have failed to reproduce the results of the quantum double-slit experiment, crushing a century-old dream that there exists a single, concrete
Bohr_family
Mathematical description of quantum state
to an abstract mathematical space. Boson De Broglie–Bohm theory Double-slit experiment Faraday wave Fermion Phase-space formulation Schrödinger equation
Wave_function
American-Brazilian-British scientist (1917–1992)
Wayback Machine. Observing the Average Trajectories of Single Photons in a Two-Slit Interferometer. D. Bohm: The characteristics of electrical discharges in
David_Bohm
Elementary particle with negative charge
double-slit experiment. The wave-like nature of the electron allows it to pass through two parallel slits simultaneously, rather than just one slit as
Electron
Foundational principle in quantum physics
John Archibald (1978-01-01). "The 'Past' and the 'Delayed-Choice' Double-Slit Experiment". In Marlow, A. R. (ed.). Mathematical Foundations of Quantum Theory
Uncertainty_principle
Type of quantum mechanics theory
clearly particles. When a double-slit experiment is performed, the electron goes through either one of the slits. Also, the slit passed through is not random
Hidden-variable_theory
Description of quantum mechanics in which the present depends on both the past and future
\rangle } evolves forwards from the past. In the example of the double-slit experiment, the first state vector evolves from the electron leaving its source
Two-state_vector_formalism
cannot determine along which path each decayed, similar to Young's double-slit experiment. However, Λ {\displaystyle \Lambda } -type atoms decay to two different
Quantum_beats
Indian physicist and academic
quantum computing and optics. Here she developed a triple-slit variation to the double-slit experiment; testing the Born rule. The Born rule predicts the probability
Urbasi_Sinha
Interferometer which uses the wave-like nature of atoms
atom interferometer reported was a double-slit experiment with metastable helium atoms and a microfabricated double slit by O. Carnal and Jürgen Mlynek in
Atom_interferometer
syndrome – Sleep - Ultradian rhythm Cyclic process – Carnot cycle – Double-slit experiment – Dynamic theory of gravity – Physics of music – Resonance – Sonoluminescence
List_of_cycles
Physical phenomenon
to Christiaan Huygens' wave theory confirmed by Thomas Young's double slit experiment and James Clerk Maxwell's theory of electromagnetism, and finally
Three-photon_interference
Quantum mechanical statistic
Dewdney presented a full calculation on the explanation of the two-slit experiment in terms of Bohmian trajectories that arise for each particle moving
Quantum_potential
Quantum-mechanical version of computer memory
Moiseev SA (2003). "Delayed single-photon self-interference — A double slit experiment in the time domain". In Bigelow NP, Eberly JH, Stroud CR, Walmsley
Quantum_memory
Physicist
mechanical concepts and historic experiments, such as mapping trajectories of photons passing through a double slit via weak measurement, or timing particles
Aephraim_M._Steinberg
Educational game about quantum mechanics
in multiple places at once. (The textbook example of this is the double-slit experiment.) How the universe can be like this is rather counterintuitive.
Quantum_tic-tac-toe
Branch of applied mathematics
wave theory of light, published in 1690. By 1804, Thomas Young's double-slit experiment revealed an interference pattern, as though light were a wave, and
Mathematical_physics
to measure Newton's gravitational constant. 1801 – Thomas Young: double-slit experiment demonstrates the wave nature of light. 1820 – Hans Christian Ørsted
Timeline of scientific experiments
Timeline_of_scientific_experiments
Italian physicist
Merli [it] and Gian Franco Missiroli, he performed a version of the double slit experiment with single electrons. Born in Riva del Garda in 1945, he graduated
Giulio_Pozzi
Digital handheld refractometer Dispersion (optics) Double-Gauss lens Double refraction Double-slit experiment Dual polarisation interferometry EDFA Effect of
Index_of_optics_articles
History of research by Augustin-Jean Fresnel
the same slit. A conventional double-slit experiment required a preliminary single slit to ensure that the light falling on the double slit was coherent
Fresnel's_physical_optics
Branch of physics that studies light
Fresnel conducted experiments on the interference of light that firmly established light's wave nature. Young's famous double slit experiment showed that light
Optics
Region of England
Bath by William Harbutt. Thomas Young of Somerset is known for his double-slit experiment in optics, and in solid mechanics for his famous Young's modulus
South_West_England
Formulation of classical mechanics in terms of Hilbert spaces
wave function is physically irrelevant. Hence, nonexistence of the double-slit experiment as well as Aharonov–Bohm effect is established in Hilbert-space
Koopman–von Neumann classical mechanics
Koopman–von_Neumann_classical_mechanics
industrially developed. From the modern perspective, the result of Young's double slit experiment (see Fig. 2) clearly points towards the wave nature of light, but
Common-path_interferometer
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
Surname or Lastname
English
English : variant of Dibble.Altered spelling of German Deibel or Deubel.
Boy/Male
Hindu
Born during the rainy season, Money
Boy/Male
Christian, Hindu, Indian, Jain, Kannada, Marathi, Telugu
Smile
Boy/Male
Hindu, Indian
Money; Russian Currency
Surname or Lastname
French
French : from a reduced form of the Germanic personal name Hildo (see Hildebrand, Houde).French : habitational name from any of several places in Normandy called La Houle or Les Houles, named in Old French with the singular or plural of houle ‘cave’.English : variant of Hole.
Boy/Male
Arabic, Muslim
Strong; Solid; Firm; Sharp
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi
Slim
Boy/Male
Dutch
Smith.
Surname or Lastname
English
English : possibly a variant of Goble or Gobel.Perhaps an Americanized spelling of French Gobeil.
Boy/Male
Muslim
Strong, Solid, Firm, Sharp
Surname or Lastname
English and Scottish
English and Scottish : probably a variant of Sewatt, which is from the common Old Norse personal name Sigvarðr, composed of sigr ‘victory’ + varðr ‘guardian’. The International Genealogical Index records several UK ancestors called Suit(t), though the name is hardly found in Britain today.
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : nickname from Old French doubel ‘twin’ (literally ‘double’, from Late Latin duplus, classical Latin duplex, from du(o) ‘two’ + plek, a root meaning ‘fold’).
Male
English
English name derived from the vocabulary word, from Latin nobilis, NOBLE means "noble."
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : variant of Double.In some cases, probably an altered spelling of South German Dobel or Döbel, a topographic name for someone who lived in a gorge or deep valley, Middle High German southern dialect tobel.
Boy/Male
Hindu
Devine smile
Boy/Male
Arabic, Muslim, Sindhi
Split
Girl/Female
Christian, Hindu, Indian, Kannada
Money
Male
English
Anglicized form of Irish Gaelic Dubhghall, DOYLE means "black stranger."Â
Girl/Female
Tamil
Slim
Boy/Male
Arabic, French
Thin
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
Boy/Male
American, British, English
From the Clay Brook; Born of Clay; Earth
Boy/Male
Biblical, British, English, German
My Corn
Male
Egyptian
, disk.
Female
Welsh
Modern Welsh name, probably derived from Old Welsh Generys, NERYS means "white lady."
Girl/Female
Muslim/Islamic
Hoping full of hope
Boy/Male
Hindu, Indian, Traditional
Bravery
Male
English
Variant spelling of English unisex Jaden, JAYDEN means "jade."
Boy/Male
Norse
King of the Huns.
Boy/Male
Arabic, Muslim
Respect
Girl/Female
Hebrew
Bee. Deborah was the Biblical prophetess who summoned Barak to battle against an army of...
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
DOUBLE SLIT-EXPERIMENT
n.
A long cut; a narrow opening; as, a slit in the ear.
v. t.
To split; to crack.
adv.
In a double degree; doubly.
adv.
Twice; doubly.
imp. & p. p.
of Double
v. i.
To attend to a spit; to use a spit.
imp. & p. p.
of Split
n.
To cut or make a long fissure in or upon; as, to slit the ear or the nose.
a.
To be the double of; to exceed by twofold; to contain or be worth twice as much as.
n.
Among compositors, a doublet (see Doublet, 2.); among pressmen, a sheet that is twice pulled, and blurred.
n.
The act of one that doubles; a making double; reduplication; also, that which is doubled.
n.
The state of being double or doubled.
imp. & p. p.
of Spit
a.
To increase by adding an equal number, quantity, length, value, or the like; multiply by two; to double a sum of money; to double a number, or length.
n.
One who, or that which, doubles.
a.
Double; doubled; reduplicative; repeated.
imp. & p. p.
of Slit
n.
To cut lengthwise; to cut into long pieces or strips; as, to slit iron bars into nail rods; to slit leather into straps.
n.
Double-quick time, step, or march.
n.
Double beer; strong beer.