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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Is the single slit experiment a practical example of Heisenberg's uncertainty principle?

I saw some videos where a person points a laser through a slit. As they reduce the width of the slit, the diffracted image spreads out, like this: Can this pattern be viewed as a consequence of ...
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0answers
20 views

Does Compressing Energy over a Multiverse Dimensional Rupre Create Mass? [on hold]

my question is only on a specific method of creating mass through super collapsation of enormous amount of energy in at a singular point or point of singularity.
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2answers
274 views

Logic of the 'imaginary wave function collapse' argument in Double Slit experiment

My question is in regards to the stance that the 'wave function collapse' is not an actual physical occurrence. That is, you are not, by observation, changing the particles position from a wave to a ...
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1answer
139 views

Modern interpretation of wave-particle duality

As far as I understand, in the early days of quantum theory there was quite a lot of debate over how to interpret what it meant for a quantum mechanical object to exhibit both wave-like and particle-...
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1answer
180 views

Experiment that demonstrates the wave-particle duality of electrons

EDIT : You're about to read the first iteration of my question which is flawed. Please go to the end to see an illustration of what I meant to say. The phenomenon I was talking about is called ...
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1answer
70 views

Matter's wave-particle duality - true? [duplicate]

I had an interesting conversation with CuriousOne the other day about the question Experiment that demonstrates the wave-particle duality of electrons. I thought that wave-particle duality existed, ...
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2answers
66 views

Does a wave have inertia?

In de Broglie hypothesis, particles have wave nature. The question is does this wave have inertia? If so is it represented in the corresponding wave equation?
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4answers
3k views

Are the Maxwell equations a correct description of the wave character of photons?

In basic quantum mechanics courses, one describes the evolution of quantum mechanics chronologically. Interference experiments with particles showed that particles should have a wave character; on the ...
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1answer
51 views

When does a wavefunction get re-created after a collapse? [closed]

Maybe another way of asking this would be, "When is decoherence un-done for a particle?" Example: Consider that we shoot an electron from a gun. Whilst in transit the electron is just a probability ...
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0answers
35 views

Light passing through two sets of double-slits in tandem

Has anyone ever set up a double double-slit experiment - one in which a second double-slit is inserted at one of the bright spots of the interference pattern produced by the first one? The intensity ...
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0answers
36 views

Firing Single Photon [closed]

We know (or pretend to know) what will happen if we fire one photon at a time and let it pass through slit/slits. But what if we don't use slit/slits and fire photons one at a time at a screen? What ...
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4answers
1k views

What does the Schrodinger Equation really mean?

I understand that the Schrodinger equation is actually a principle that cannot be proven. But can someone give a plausible foundation for it and give it some physical meaning/interpretation. I guess I'...
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9answers
6k 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? ...
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0answers
27 views

possibility of interference of electrons during its transition from higher to lower state

They say an electron possesses dual nature (what we call wave-particle duality in order to relate with our everyday world). If it is an electron (definite particle) it too shows wave-like phenomenon ...
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2answers
412 views

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 $(\nabla_\mu \nabla^\mu + m^2) \Phi=0$). ...
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1answer
53 views

Double-slit intensity distribution for particles

For waves, the intensity pattern for the double-slit experiment is given by the following equation (as of David Morin's notes on waves) $$ I(x) = I(0) \frac{D}{\sqrt{x^{2} + D^{2}}}cos^{2} \left ( \...
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4answers
1k views

Two contradictory groups of statements from two different books on quantum physics

There are two contradictory groups of statements from two different famous books on quantum physics. Which one is correct? Group (1) : Following statements are from Berkeley Physics Course Vol. 3, "...
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1answer
39 views

Dual nature of matter and electromagnetic radiations [duplicate]

I haven't completely understood the dual nature of matter and electromagnetic radiation. If all matter has wave nature and and all waves have particle nature then how will one distinguish between ...
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2answers
121 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"?
3
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1answer
128 views

Why one should follow Snell's law for shortest time?

whenever two media and two velocities are involved, one must follow Snell's law if one wants to take the shortest time. Why snells law must be followed to travel diffrent media in shortest time? ...
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2answers
57 views

Atom Particles Relationships

I am an agriculture student, and we study tons of chemistry, and despite I took the exams I still have a good doubt on atoms. Through my studies I would say electrons are very tiny containers of ...
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7answers
16k views

Why does observation collapse the wave function?

In one of the first lectures on QM we are always taught about Young's experiment and how particles behave either as waves or as particles depending on whether or not they are being observed. I want to ...
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1answer
150 views

About 'de Broglie hypothesis' and the double slit experiment

EDIT: As i mentioned in my original question, i do not have the background to fully understand @Timaeus answer (which was very detailed indeed). I would appreciate if someone could give a more '...
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0answers
36 views

Help needed for Simple derivation for duality of matter

A teacher told showed me a way to derive an equation which shows the duality of matter. We know, $E=hc/\lambda$. and $E=mc^2$ So, $hc/\lambda=mc^2$ We get, $p$ ( momentum ) = $h/\lambda$. How ...
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2answers
271 views

From the viewpoint of field theory and Derrick's theorem, what's the classical field configuration corresponding to particle? Is it a wavepacket?

In the framework of QM, we have known that particle, like electron, cannot be a wavepacket, because if it is a wavepacket then it will become "fatter" due to dispersion and it's impossible. However ...
3
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4answers
152 views

Why can't the wave model for radiation account for the photoelectric effect?

While I understand the effect of varying wavelength and frequencies on the photoelectric effect, I can't seem to turn my mind around that question... I suspect it has to do with quantas and the non ...
0
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1answer
44 views

Can gravitational waves interfere polarize or show any other properties of stndard waves

Is it possible for gravitational waves to be able to produce phenomenon such as interference and polarization etc. which are observed in standard waves. Also is it possible for gravitational waves to ...
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3answers
116 views

Does an electromagnetic wave necessarily contain many photons? [duplicate]

I've often come across people saying from a quantum physics standpoint that an electromagnetic wave necessarily contains many photons. But doesn't the double-slit experiment conducted one photon at-a-...
3
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1answer
140 views

How do (and don’t) particles emerge from fields?

I am aware of the following field- and particle-like notions: QFT particle, a unit of excitation in (the Fock space of) a QFT; SR field, an extremal $A = A(\mathbf x)$ of a Lorentz-invariant action; ...
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1answer
45 views

How does sunlight undergo interference as shown in the video?

As far as I know, for interference to happen in a double-slit experiment, the light source should be coherent and monochromatic. If that is the case then how come sunlight undergo interference and ...
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2answers
49 views

Evaluating double-slit experiment for wave-particle duality

Is it possible that the wave-like behavior of particles in double slit experiments is just an outcome of particle distribution? Can we regard or treat a normal or Gaussian distribution as wave-like? ...
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1answer
73 views

Mathematical proof of Bohr's complementarity principle

Complementarity principle, in physics, tenet that a complete knowledge of phenomena on atomic dimensions requires a description of both wave and particle properties. Depending on the experimental ...
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1answer
35 views

why laser beams don't get reflected (or knocked away) when they intersect with each other?

laser beams are photons with the same frequency and the same direction, but according to the wave-particle duality, photons have mass. but if we shoot two masses and they intersect at some point ...
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2answers
67 views

Single slit diffraction - wave vs particle view

If monochromatic light is shot through a single slit onto a screen, we can analyze the pattern on the screen using wave properties. This analysis is done assuming the wavelength is constant. But with ...
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4answers
918 views

Why does light diffract only through slits?

We can see diffraction of light if we allow light to pass through a slit, but why doesn't diffraction occur if we obstruct light using some other object, say a block? Why are shadows formed? Why doesn'...
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2answers
67 views

Observer in the double slit experiment with photons

In the double slit experiment with photons, the interacting observer is an instrument, detector… If you replace the detector with a piece of metal with the same mass as the mass of the detector, the ...
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0answers
55 views

Why call it a particle and not a wave pulse?

My physics textbook says that photoelectric emission provides conclusive evidence for the particle theory of light. Apparently, since photoelectric emission only works at certain frequencies, we can ...
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3answers
114 views

Can particles at rest have wave nature?

Can particles have wave nature even when they are at rest? I think this is possible due to the formation of standing waves
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3answers
105 views

How does wave-particle duality describe Photoelectric effect?

I don't know if electrons work as particles or waves or maybe both in photoelectric effect. How is Photoelectric Effect actually described by Wave-Particle Duality?
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1answer
55 views

Could particle wave duality be caused by gravity? [closed]

We know that light (and other particles) displays particle wave duality, or the ability to be a particle and a wave at the same time. After that it becomes confusing. We also know that gravity is a ...
7
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1answer
374 views

What was Newton's own explanation of Newton's rings?

What was Newton's own explanation of Newton's rings? Newton advocated a corpuscular theory of light, but his rings would most conveniently be explained by a wave theory. How did he explain his own ...
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2answers
67 views

What would diffraction of a macroscopic object look like?

I read an interesting question here in the forum (Will a football (soccer) diffract?) and came up with the following doubt: even though its diffraction angle is too small to be detected, if we had the ...
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3answers
3k views

The Dual Nature of Matter

I can't seem to understand the dual nature of matter completely. If electrons have a wave nature, then if two electrons were to collide, wouldn't they undergo interference and form an electron wave ...
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5answers
16k views

Can an electron be in two places at the same time?

So I've been reading a bit and watching some videos about the double slit experiment, and therefore the wave particle duality; I've also read this "implies" that a particle can be in two places at the ...
0
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2answers
86 views

Why do electrons/photons create an interference pattern in the double slit experiment? [duplicate]

So...if electrons and photons are both particles and they pass the two slits, why do they create an interference pattern as if they were waves? Now from what I've read, it's because of the ...
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1answer
127 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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3answers
17k views

Frequency of an electron

If frequency is defined as the cycles per time, then what is meant by "frequency of an electron"? If it refers to the rotation of electron around a nucleus, then which phenomenon is considered for a ...
1
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1answer
95 views

Is double slit interference due to EM/de Broglie waves? And how does this relate to quantum mechanical waves?

I'm really confused about the fact that there seems to be two types of waves at play: the EM wave, which I understand to be an actual fluctuation of EM fields in space, and this other type of bulk "...
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2answers
66 views

Question on matter waves

So,I just started this topic on modern physics in school that contained the concept of"de broglie waves" or "matter waves" and there are a few concepts that are unclear to me. Firstly, does a single ...
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1answer
91 views

What does the 'charge' of the electron transform into when the electron gets converted to wave? [closed]

Mathematically when a particle exhibits wave nature, its mass is supposed to be converted into energy. I want to know what happens to the charge of particle? what does the 'charge' of a non ...