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Questions tagged [wave-particle-duality]

Use this tag for questions relating to the "wave-nature of particles" or the "particle-nature of waves" as they are often discussed in quantum mechanics, where a single object has properties of both classical particles and classical waves.

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What experiment would confirm De Broglie equation on photons?

If we want to check experimentally that, for a photon: λ=h/p (De Broglie equation) Has such experiment been carried out? What is/would be the experimental setup? Wikipedia doesnt show such protocol ...
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Question on de Broglie hypothesis [duplicate]

I have read about de Broglie hypothesis that matter like light can also exhibit wave particle duality. This gave rise to the following questions in my mind. The wavelength for electrons is ...
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How are classical and quantum momentum related in an intuitive manner?

I know that quantum momentum is inversely proportional to the wavelength of the probability or matter wave of a given particle, but I don't get how this relation of this abstract mathematical ...
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45 views

Does wave-particle duality rely on accepting the Copenhagen interpretation?

If you're a scientist that subscribes to the many worlds theorem, does that mean you do not accept wave particle duality? Seeing as MW postulates that the wave or particle form has always existed that ...
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Clarification on Phase wave derivation in De Broglie's paper

De Broglie's paper refers to his theorem A periodic phenomenon is seen by a stationary observer to exhibit the frequency $ν_1=h^{-1}m_0c^2\sqrt{1-\beta^2}$ that appears constantly in phase ...
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Wave packet in dispersive medium, how will the group velocity be affected? [closed]

A wave packet with center frequency ω is propagating in dispersive medium with phase velocity of 1.5 x 10^3 m/s. When the frequency ω is increased by 2%, the phase velocity is found to decrease by 3%. ...
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Wave antiparticle duality

Can an antiparticle such as the antiparticle of an electron - a positron exhbit wave particle duality. We know from de Broglie, and the Davisson-Germer experiment in which we fire electrons from an ...
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Strange strong interference/noise in radio waves [closed]

Good night, Since 2014 when I bought my car I use a FM transmitter inside it to play my bluetooth musics, to escape for every radio in city I put the radio to work in the highest frequency it works ...
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Quantum objects duality between waves and particles

i am reading an intresting book titled "Life on the edge: the coming age of quantum biology". And the subject of "quantum objects duality between waves and particles" takes a big part of this book. I ...
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How does light 'choose' between wave and particle behaviour?

Light exhibits wave behaviour in phenomenon such as interference but particle behaviour in the photoelectric effect. How does light 'choose' where to be a wave and where to be a particle?
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Does Dual Nature mean that any wave will have a particle counterpart? [duplicate]

Does Dual Nature mean that any wave will have a particle counterpart? electrons have electron waves and light waves are made up of photons. Does this mean all kinds of waves have its particle ...
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Interpreting wave-particle duality due to wave crests [closed]

I have been thinking a lot about the double slit experiment and am wondering whether any theorist has ever considered the following interpretation for wave-particle duality: Could the reason we ...
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Can light particles be the medium in which another wave travel through?

So, I was thinking about how light wave something act like particles, and I thought, if light is made of particles, couldn’t a mechanical-like wave travel through it? Is this possible, and in what ...
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1answer
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Driving force and mean of a particle wave function [duplicate]

I am currently undergoing a course on introduction to quantum mechanics and we took the historical approach. I'm currently at DeBroglie wavelength. He introduces the wave particle duality in matter, ...
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What are Bohmian trajectories for a free electron?

A free electron, or any other quantum particle, has an uncertain position/momentum, according to Heisenberg uncertainty principle. The squared amplitude of the wavefunction determines the probability ...
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1answer
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Is this a correct argument why $c$ is the cosmic speed limit, and what does it mean for the speed of massless particles? [closed]

I am now in my second bachelor, taking both an electrodynamics and a quantum mechanics course. This made me think of an argument to explain why particles cannot exceed the speed of light. So far I ...
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2answers
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In a pilot-wave model, is knowing the position of the particle sufficient for predicting its behavior?

Suppose that we somehow exactly know the position of an electron before hitting the double-slit structure (for example we know it's 20cm away from the structure and it's closer to the left slit). In ...
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2answers
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How do quantized photons interact in an interferometer?

Since light is quantized into photons, how can a single rare photon entering one side of a large, [say, 100 meter wide], interferometer from a very dim star, a phton which is only in the ...
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1answer
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What is “quantized momentum transfer”, and can it account for the double-slit experiment?

In https://www.sciencedirect.com/science/article/pii/S0378437109010401, the author claims that the interference pattern obtained in the double-slit experiment does not need a wave description of ...
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Double Slit Experiment : Photon vs Electron

are the following statements correct: For Young's double slit experiment with electrons, the separation between two slits has to be smaller than the position uncertainty of the electrons. But no ...
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Question about the diffraction of electrons

This question concerns the diagram on the left. This is the set up. My question is that, why is collector current not an increasing function of the KE of the electrons? I can understand the graph ...
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Why is a maximum value of current observed in Davison and Germer's experiment?

While studying matter waves, we were discussing Davison and Germer's experiment on electron diffraction when we learnt that a maximum value of current (measuring the intensity of electron diffraction) ...
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1answer
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Question about point particle vs. wave equation location

Another uncertainty question, this came up in another forum. As I understand it an electron, for example, is a point-like particle. I take this to mean it exhibits dimensionless properties, but ...
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1answer
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Magnetic field in double slit experiment using electron beams

Say I have an experimental setup like this for a double slit experiment using an electron beam instead of light. There is a magnetic field coming out from the plane of paper. So will we get an ...
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1answer
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Is every particle sustained ripple in its respective field?

This is neither a homework nor a calculational question, but more of a conceptual one. I was wondering can every particle; that is, the ones indivisible (because divisible ones can be broken down ...
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Wave-like properties of particles [duplicate]

If we consider a particle such as an electron to have wave-like properties too, what kind of wave it is? What is exactly meant by its wavelength?
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Reflection by a mirror of wavelength type dimensions

Suppose there is a perfectly reflecting mirror, which is somehow made to the size of wavelength is visible light. Will there be any reflection now, or will it act in some other way? I thought there ...
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1answer
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Holograms and Entanglement: Does recording an entangled signal in a hologram “observe” the entangled state?

Suppose I have two photons $A$ and $B$, which are entangled. As I have had it explained to me, entanglement works more or less as follows: I observe or measure $A$, and find $A=S_a$, where $S_a$ ...
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Quantisation of radiation energy [duplicate]

I am currently studying about the dual nature of radiation and matter. I have come across how the radiation energy is quantified by saying that it is built up of discrete units. Though I fairly have a ...
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2answers
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Why the cycles completed by standing wave completed by electron in a certain orbit is same as principle quantum number?

According to the bohr model and de-broglie hypothesis why the cycles completed by standing wave completed by electron in a certain orbit is same as principle quantum number? When we derive the ...
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When/Why Did Physics Discard The Point Charge As An Accurate Representation? [closed]

Is there anything about the implications of the "early" quantum theory of Schrodinger equation, wave-particle duality, or the two slit experiment that conflicts with the idea of a point charge? Did ...
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Measurement in QM [duplicate]

I understand that measurement collapses the wave function of a particle, but what exactly does measurement mean here? In other words, how is a measurement defined? Does it imply interacting/disturbing ...
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2answers
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De Broglie Wavelength of a particle at the turning point of a fountain

If you think about an atom which is launched in some kind of straight fountain, upward in the gravitational field. At the turning point the velocity and therefore the momentum of the particle seems to ...
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What are the similarities/differences between the behaviors of Quantum particles and bouncing droplets? [duplicate]

Bouncing droplets on a fluid surface show many weird behaviors of the quantum world. Look at this for example: https://arxiv.org/abs/1307.6920 They can show tunneling, double-slit interference ...
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Are phase and particle (photon) number in QED conjugated variables?

I found in A. Zee's book "QFT in a nutshell" (1.edition) the interesting relation (8) respectively (9) in chapter III section 5 (p.173) which states that in a collective of non-relativistic bosons the ...
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4answers
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$E=hf$ true for all implies $E=pv$ true for all?

In the answer to this question: Can I apply $E=hf$ to a particle having mass? It was stated that $E=hf$ is true for all particles. If so, doesn't this imply that $E=$momentum x velocity is true for ...
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Wave particle duality and gravity

Is a particle's center of gravity at the center of its wave function or is it where we would measure the particle to be? When we measure a particle does its center of gravity shift to where the ...
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1answer
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Does (Tomas) Bohr's modified double slit argument really doom Couder's quantum/classical fluid dynamics analogy?

I'm just an amateur, probably why I find the de Broglie/Bohm/Couder approach to QM compelling. But Copenhagen struck back: in a coincidence, Bohr's grandson is a fluid physicist who claims that ...
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Is a light pulse equivalent to a burst of photons

Reading about photons you get all sorts of weird statements like "time is frozen for a photon", "the photon dies the instant it is born" and "the photon is everywhere and nowhere", etc. Probably these ...
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How exactly does the intensity of light affect photoelectric phenomena?

We were taught that the intensity of light is equal to the rate of flow of photons per unit area times the energy of each photon(planck’s constant times its frequency) then would that mean the ...
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In the double-slit experiment of electrons (observed by photons), is it correct to say the collapse is caused by the momentum of the photons?

I'm working off the article, The Double Slit Experiment Demystified. Disproving the Quantum Consciousness connection. I think it's well-written, but I'm not convinced about this part: So what is ...
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In the double-slit experiment, why is it never shown that particles may hit the space between or outside the slits?

In depictions of the double-slit experiment that model the photon or electron as a particle, i.e. when attempting to measure which slit the particle passes through, it always shows the particle ...
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Something strange in the quantum Ghost imaging experiment

In his paper, Strekalov, D. V., Sergienko, A. V., Klyshko, D. N., & Shih, Y. H. (1995). Observation of two-photon “ghost” interference and diffraction. Physical review letters, 74(18), 3600., they ...
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6answers
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Wave behavior of particles [duplicate]

When people say that every moving particle has an associated wave, do they mean that the particles will move up and down physically, for example when we say that a moving electron has a wave ...
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3answers
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Are particles and waves separate entities? [closed]

Can this be proven incorrect: Particles and waves are separate entities. Waves are the energy mechanism that transports the particle but not part of the particle itself. If a photon gets created the ...
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1answer
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Quantum tunneling/transmission through an infinite potential

In Shankar exercise 5.4.2 we consider the reflection and transmission of a wavefunction through a delta potential $V(x) = aV_0\delta(x)$. I understand that to mean that the potential is zero ...
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1answer
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Bohm's view of double-slit experiment, wave-particle duality

I gather that Bohm denies the notion that the act of measurement decides whether a photon will be a wave or a particle. Bohm's idea seems to be that the photon is always a particle with a real ...
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What is the wave nature of electron? [duplicate]

Is electron a standing wave or a probabilistic wave? or is it both? can someone explain me also what wavelength we calculate from de Broglie's equation? also does electron spin around itself? or is ...