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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1answer
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Wave packet in curved spacetime

It is known that the classical equation of motion for a scalar field wave packet on a curved spacetime background gives the geodesic trajectory (the e.o.m. is $(\nabla_\mu \nabla^\mu + m^2) \Phi=0$). ...
3
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0answers
10 views

Why is this result wrong for finding speed of a neutron in relation to deBroglie wavelength [duplicate]

So given a deBroglie wavelength 1.8nm and the equations E=hf and E=1/2mv^2 you can get v = 2h/m*(1.8*10^-9) but this is 2 times the expected value. Wherever I look online people use the momentum p ...
0
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2answers
60 views

About sub-atomic physics and the models used

Is it true every sub-atomic particle can have a mathematical representation as a wave? Regarding every theory about sub-atomic particles can all these theories be 'revised' in a way so they only talk ...
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1answer
25 views

How can a probability distribution have wavelength (de Broglie wavelength)?

The wave function described by Schrodinger's equation is interpreted as describing the probability of a particle in at any point in space, i.e. a probability distribution. Since this distribution ...
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0answers
37 views

De-broglie wavelength [on hold]

The de-broglie wavelength of an electron emitted from the ground state of an H-atom after the absorption of a photon equals 1/2 of the de-broglie wavelength when it is in orbit. The energy of the ...
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1answer
31 views

Is the relation c=νλ valid only for Electromagnetic waves?

What is the validity of the relation $c = \nu\lambda$? More specifically, is this equation valid only for Electromagnetic waves? I read this statement in a book, which says: de Broglie waves are ...
1
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1answer
73 views

Photon doesn't answer it… How will wave nature explain it?

There are two perfect reflect mirrors facing opposite to each other... I place a lamp which is not lit in between the mirrors... I switch it on and switch it off and remove the lamp from between the ...
0
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1answer
55 views

How to calculate a straight edge diffraction pattern

A straight edge diffraction pattern is not the same as a slit or multiple slit diffraction pattern. The spacing between fringes is not equal but gradually gets smaller the farther out you go as in the ...
32
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9answers
5k views

Is the wave-particle duality a real duality?

I often hear about the wave-particle duality, and how particles exhibit properties of both particles and waves. I most recently heard this in this video. However, I wonder; is this actually a duality? ...
0
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0answers
27 views

Why isn't the de Brogile equation not λ=2(h/p) [duplicate]

So I was thinking about the two equations: $E = \frac{1}{2}mv^2$ And $E = hf$ Then $\frac{1}{2} * mv^2 = hf$ $\frac{1}{2} * pv = hf$ $\frac{\frac{1}{2} * pv}{h}$$ = f$ $\frac{pv}{2h}$$ = f$ ...
1
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1answer
34 views

Is it possible to detect a continue pattern of a single wave? [closed]

In the two-slits experiment , one photon gives an interference of two waves with their maximums. Is it possible to seperate one of the waves ? If so, can you see a continue pattern on the print ...
3
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3answers
390 views

The Gluon - Does It Exhibit Wave Properties?

Do Gluons have frequencies and wavelengths? I assume that they do, but have been unable to find anything on point in SE or Wikipedia. Just beginning to study university-level physics here.
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2answers
42 views

Double slit with observer?

https://www.youtube.com/watch?v=Xmq_FJd1oUQ Apologize if this is a dumb question, I'm just a kid trying to make sense of something that I'm new to. It shows the wave interference when you send a ...
0
votes
1answer
60 views

Question about heisenberg uncertainty principle and single-slit diffraction

My question relates to this video illustrating the Heisenberg uncertainty principle. The video shows light being shot through a slit forming a spot on a screen. As the slit narrows, the width of the ...
1
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3answers
49 views

Homework - Young's Double Slit Experiment

I have attached the question as a picture. I simply don't understand where to begin this question. It is given that $l \gg d$. Why shouldn't the phase difference at $O$ be zero? What exactly is ...
2
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1answer
134 views

References on De Broglie-Bohm pilot wave theory

Are there any good books related to the not much popular De Broglie-Bohm pilot wave theory and its application in hydrodynamics, walking droplets concepts?
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1answer
36 views

How does the interaction between individual electrons of beams affects the diffraction pattern?

Consider the diffraction of an electron beam. How does the interaction between individual electrons of beams affects the diffraction pattern? If it really affects the diffraction pattern, then is ...
1
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3answers
507 views

'Observer in double slit experiment' publications available?

I've just found Dr Quantum video sample where double split experiment is presented conducted out by researchers. Are there any papers published in peer reviewed journals on that experiment to read in ...
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3answers
44 views

In diffraction process, how to describe the edge in the sense of particle-wave duality?

In diffraction experiments photons show behind an edge intensity distributions in the form of fringes. It seems to be without doubt that the edge is a part of the game. My question is, how to describe ...
2
votes
3answers
91 views

Energy in one wavelength

I know that the energy of one photon equals $E=hf$ and that concept of photons came from the photoelectric effect. My question here can we assume that a photon equals one wavelength for example if we ...
1
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1answer
66 views

What is an Unbalanced Interferometer

I have read in some papers about a so-called unbalanced interferometer. This appears particularly in the context of Experimentally verifying the Englert-Greenberger-Yasin Duality Relation. However, I ...
0
votes
1answer
54 views

Are electrons wave packets instead of particles?

After studying de Broglie's hypothesis we can very well say that every particle is just a localised wave packet and not a particle in the sense of the word. A particle would be like a point in space ...
4
votes
4answers
857 views

Difference between electromagnetic radiation (EMR) and Electromagnetic Field?

I'm a freshly graduated electrical engineer. One course that I really struggled with was Field Theory, because it was a lovely assortment of vector calculus and things that were explained to me well ...
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0answers
18 views

Doubt regarding de Broglie relation from group velocity

This is a derivation of de Broglie relation from my textbook. I'm confused regarding the following: In the equation $p=\hbar k + c$ the author sets $c=0 $ by stating $ p=0 $ so $k=0$. I don't ...
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1answer
72 views

What is the physical nature of electromagnetic waves?

I've been trying to work out what the physical nature of electromagnetic waves is, since I reasoned that given electromagnetic waves have wavelengths that are given in distance units, rather than ...
3
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3answers
1k views

If matter and light have dual-nature, shouldn't we able to explain the observed phenomenons using either wave or particle?

Historically wave and particle has been perceived as totally different phenomenons (before 20th century). Now is it widely accepted and there are experimental results to show that in fact both matter ...
0
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1answer
43 views

What part of this picture demonstrates the wavelike properties of light and what parts demonstrate the particle-like properties?

Back in march some scientists took the first picture of light as both a wave and particle. I was wondering what parts of the image actually demonstrated these properties. I have some ideas, but the ...
5
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6answers
280 views

Explain the notion of light/electromagnetic waves/photons to a non-physicist

A non-physicist asked me about special relativity. My explanations naturally were based on gedankenexperiments involving light. This forced the question: "What is light? It is particles, isn't? Or is ...
2
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1answer
51 views

Visualizing the (expected) gradual change from quantum to classical behavior

I'm pretty much a layman (no formal Physics education beyond high school) but find Quantum Mechanics endlessly fascinating. Ok, so when the double slit experiment is performed using ...
0
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2answers
172 views

Do all the electromagnetic radiations have dual nature i.e. particle nature & wave nature?

I have studied the dual nature of the light as particle nature & wave nature. A photon of light energy can knock a single electron out of certain metals (usually having less ...
-3
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1answer
175 views

Compton effect on wavelength

Mention the change in wave length of the photon after it collides with free electron?? Is the rule of particle can be applied here?
0
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2answers
73 views

At which times does light act as a wave and at which times does it act as a particle? [duplicate]

Is light a "particle", that exists as a photon or as a "wave", the usual electromagnetic wave. If it's both when does it exist as a "particle" or a "wave"????
0
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2answers
57 views

Light wave particle duality

I have studied about the dual nature of light and all the experiments that proved light was a wave and sometimes a particle, and I am comfortable with the concept that it can be both. However, I have ...
4
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3answers
100 views

What is the oscillating quantity in matter waves? [duplicate]

Every wave is characterised by some periodically changing disturbance. For example, that entity is air pressure for sound waves and electric,magnetic fields for EM waves. What is that disturbance for ...
0
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2answers
71 views

Light interference single particle 4 slits experiment - what are interpretations apart from many-worlds interpretation?

Someone knowledgeable about physics advised me to read a book "David Deutsch: The Fabric of Reality, 1997". The book gives experiment like two-slit one, difference is that 2-slits compared to 4-slits ...
0
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1answer
37 views

Wave like behaviour

Sorry if this is a repeat but I'm curious if wavelength=h/p then does that imply that we would be able to observe the wavelike properties of a very still object? For example an average human weighing ...
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4answers
14k views

Frequency of an Electron

My question is very simple. If frequency is defined as the cylces per unit time, Then what is meant by "Frequency of an Electron" ? If the rotation of electron around a nucleus is considered then, ...
10
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0answers
187 views

Anyons as particles?

I'm trying to understand the basics of anyons physics. I understand there is neither a Fock space they live in (because Fock is just the space of (anti-)symmetrized tensor product state, see e.g. ...
8
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3answers
390 views

Why is Planck's constant the same for all particles?

This question came to me while reading Where does de Broglie wavelength $\lambda=h/p$ for massive particles come from? This question has a nice answer that explains that wave number has be ...
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0answers
32 views

EM wave frequency and photon energy

We know that a quanta of light of frequency f has energy hf. But when I consider a single photon there is no concept of "frequency of a wave" because there is no EM wave associated with it which ...
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0answers
9 views

Illustrate two phenomena which reveal wave nature of matter [closed]

i think the experiment by Davisson and Germer showed the diffraction pattern by electron i want to know specifically what were the two phenomena
2
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2answers
221 views

Is de Broglie matter wave a mass or a particle hypothesis?

I'm having difficulty understanding de Broglie matter wave hypothesis. It is a mass or a particle hypothesis? According to de Broglie a particle with mass $m$ moving at a constant speed has an ...
0
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0answers
33 views

What are the exact setups to observe a wave function and its collapsed state?

I was reading this article: http://io9.com/5528321/how-smart-do-you-need-to-be-to-collapse-a-wave-function and I need some clarification on the experiment setup. My current understanding is that if ...
0
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2answers
240 views

Importance of Schrodinger equation [closed]

Louis de Broglie suggested that for microparticles like electrons, wave-like properties can be applied in order to explain some phenomena. Schrodinger wrote down an equation, a wave equation, ...
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0answers
11 views

Can we take the change in the energy of photon in Compton effect as electron's kinetic energy?

Suppose a photon of energy 3 keV collides elastically with an electron initially at rest. If the photon emerges at an angle of 60$^\circ$, we know that the wavelength of photon will change from ...
2
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1answer
66 views

Einstein's 1905 “Concerning an Heuristic…emission and transformation of light”

I'm currently attempting to read Einstein's annus mirabilis papers, starting with his introduction of the quantization of light in the paper: "Concerning an Heuristic Points of View Toward the ...
0
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1answer
46 views

Wave nature of an electron

Quantum mechanics tells us that any quantum particle behaves as particle or waves in different situations. Assume that the electron is behaving like wave in some situation, how can I visualise this ...
0
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1answer
77 views

Wave packet and group velocity?

While finding the wave function of a free particle say $\psi(x)$, my textbook says that this is nonphysical because the wave velocity is not same as particle velocity of the free-particle. I don't ...
0
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1answer
36 views

Are there any other tests demonstrating wave properties besides interference and diffraction?

Are there any other tests demonstrating wave properties besides interference and diffraction? How about refraction? Does it show wave properties also?
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4answers
400 views

Clarification about Wave-particle duality

Okay,so I am learning about the double slit experiment done with electrons. I saw this picture, which shows the interference pattern being built up slowly with increasing number of electrons: I ...