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-1
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0answers
17 views

What makes electrons behave like particles or waves at different times? [duplicate]

I am quite puzzled about the theory that electrons or light often behave as particles and sometimes as waves. So, I wanted to know more about this phenomena and what happens when and why.
0
votes
3answers
409 views

Double slit experiment observation

In the double-slit experiment, if you shoot particles through the slits one by one and observe which slit they travel through, is there still an interference pattern on the screen behind the slits? If ...
2
votes
2answers
93 views

Do atoms behave like waves? [duplicate]

I've heard someone state that the double slit experiment can also be done with atoms, not just electrons or photons of light.
3
votes
2answers
165 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 ...
0
votes
2answers
37 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 ...
-1
votes
1answer
46 views

Wave-particle duality - particles as a special case of waves?

This may be an incredibly dumb question, but I'm asking it anyway. What is wrong in thinking that particles are just waves with amplitude zero?
5
votes
3answers
514 views

What is the wave in an electron? [duplicate]

For Photons, their 'waves' are oscillating electromagnetic fields. From what I've heard, electrons are also some kind of wave. So what 'field' is exactly oscillating for electrons, which makes them a ...
1
vote
3answers
131 views

Why aren't electrons waves by “default”?

I was reading "The holographic universe" by Michael Talbot and it said that most scientists believe, and there is proof of the fact that an electron is only a particle when we are observing it. Now, ...
-3
votes
2answers
89 views

“X-rays”, “gamma rays”, “sun rays”… But electromagnetic waves are NOT rays and DO NOT consist of rays?

In a separate question I'm struggling to figure out the nature of EM waves. But it's a vast topic and I'm trying to narrow it down to small specific questions. It turns out that all electromagnetic ...
3
votes
1answer
228 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 $(\nabla_\mu \nabla^\mu + m^2) \Phi=0$). ...
2
votes
2answers
10k 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, ...
28
votes
8answers
4k 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
votes
1answer
42 views

Particle position and speed [duplicate]

If I understand correctly, particle is something at a point of time, where you can tell it's position, but what if particle is moving, then you can tell it's speed. From what I understand wave is NOT ...
3
votes
5answers
452 views

Fermion vs. Bosons and particle vs. wave: is there a link?

I'm puzzled since several years on this basic aspect of quantum mechanics. Quantum theory is supposed to describe particle-wave symmetry of our world. It also describes our universe in term of bosons ...
6
votes
5answers
146 views

Is a single photon also a Maxwellian wave?

A photon is associated with the equations $h\nu$ and $\frac{hc}{\lambda}$. My book (Serway Modern Physics) says that Einstein explained the photoelectric effect by assuming that the classical ...
1
vote
1answer
51 views

Has anyone done a double-slit experiment with another single slit in front of it?

I find myself wondering if anyone has done the following experiment, and what the results indicated. My idea is a double slit, with another single slit, followed by a screen. ...
0
votes
1answer
58 views

Double slit experiment, detecting “particle direction” at the screen

This may be a stupid question, and I apologize if it is. With the double slit experiment, measuring which slit the electron came through causes it to act like particle. Instead, I wonder if it is ...
1
vote
6answers
312 views

Estimating our de Broglie wavelength

This could be a very naive question, but I feel always disturbed by it since I couldn't ever figure out a perfect answer. Why is our de Broglie wavelength (dBw) so tiny and how could we roughly ...
-1
votes
1answer
41 views

About sub-atomic physics and the models used

Is it true every sub-atomic particle can have a mathematical representation as a wave? Can an electron and a proton and a neutron be represented as waves? Regarding every theory about sub-atomic ...
0
votes
2answers
110 views

Post mortem measurement of particle-wave duality

I was wondering what the outcome of this experiment would be: You shoot single photons at a double slit. On their way there you preform a measurement in $x$ so you get the time ($t_0$) the particle ...
0
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0answers
28 views

waves particle duality of human body [duplicate]

De Broglie stated electrons can travel as particles and waves. Electrons show its waves properties when they can diffract through a carbon layer. So, I am not sure about his statement which human also ...
7
votes
2answers
525 views

Have they really photographed light behaving both as a particle and a wave?

I just came across this article where they are claiming that they have photographed light behaving both as a wave and a particle! The paper has been published in Nature Communications and I read the ...
2
votes
2answers
54 views

What pattern would emerge in a double slit experiment in which you tried to measure the particle before the slits?

Asked this question many times before, on different sites as well, but i still haven't gotten a good answer for some reason. Some will say one thing, others another, some won't really give me a direct ...
4
votes
3answers
630 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 ...
0
votes
1answer
74 views

Wave properties and temperature

Today it was told me that wave properties of a particle increase if the temperature decreases. I'm surprised because I have never listened a similar thing, but I think that it's very interesting. ...
0
votes
1answer
72 views

Question about the double slit experiment

If we measure a particle before it passes through the slit, would we see the particle or the interference pattern on the screen after the slits?
2
votes
2answers
96 views

Is light a particle with EMF or does it travel in wave? [duplicate]

Is light a particle which has a electromagnetic field around it OR does the particle itself travels in a wave like motion? IS it just the EM field which moves in a wavy motion like ripples? (Please ...
-2
votes
1answer
109 views

What happens in a universe with only two electrons? [closed]

What happens in a universe with only two electrons? Do they stay as waves or do they collapse into particles?
1
vote
1answer
126 views

Do Waves have mass? [duplicate]

Do any form of electromagnetic waves like visible light have mass? It is known that all electromagnetic waves have energy. According to Einstein's $$ E^2=p^2c^2 + m^2c^4 $$ formula, the energy of a ...
0
votes
1answer
44 views

Do/May pure electromagnetic waves ( Non dual natured ) exist?

The light as well as all matter 'particles' show dual nature. But my question is if according to the Maxwell equations, Electromagnetic waves are valid events, can they actually exist in pure wave ...
0
votes
2answers
199 views

Uncertainty and wave-trains

My textbook and the following extract from feynman's lectures present the same idea regarding wavetrains and uncertainty in their wavelengths. Why is it that a wavetrain confined to some space has an ...
7
votes
3answers
323 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 ...
2
votes
1answer
73 views

Why does a real/virtual photon interact only with charged particle?

A photon is the force carrier of an electromagnetic wave and it consists of an electric and a magnetic field propagating through space at the speed of light in vacuum. It exhibits wave-particle ...
0
votes
2answers
127 views

Are matter waves (de Broglie) classified as transverse or longitudinal? [duplicate]

We know that waves are of two types: transverse and longitudinal, and we have studied about de Broglie waves as well, so which one of them is it? Or we have other means to classify them?
1
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5answers
139 views

The nature of measurement

Does the measurement of the particle change it's physical state? Or does it only seem to do that? Ex. if a particle was measured before the slits, would we see an interference pattern, or a particle ...
6
votes
5answers
754 views

Quantum Wave Mechanics

I am studying QM-I these days. Now, I just think of the wave function as just a mathematical function that defines the state of the particle at an instant and from it you can extract various ...
2
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1answer
66 views
2
votes
1answer
126 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
votes
0answers
80 views

Are the particle-wave duality and the quantum uncertainty principle united?

In a recent paper by Patrick Coles, Jedrzej Kaniewski, and Stephanie Wehner at the Centre for Quantum Technologies at the National University of Singapore, they came to the conclusion that the ...
0
votes
2answers
73 views
4
votes
6answers
507 views

What is the mechanism behind the wave - particle duality

I'm not exactly sure how to phrase this question; I've been reading about wave -particle duality, its history and how it works. But it's really bothering me, whenever I watch YouTube videos about it ...
0
votes
1answer
50 views

Interference of waves

Every thing has a dual nature. So if we take waves(consider light interference) as particles, exactly what happens during interference (both constructive and destructive)? Can you explain in easy ...
3
votes
5answers
257 views

Isn't all light polarised?

I apologize if my question does not make sense.(I'm teaching myself microscopy.) So reading Fundamentals of Light Microscopy and electronic imaging by Douglas&Murphy, at one point the author ...
1
vote
5answers
247 views

Are double-slit patterns really due to wave-like interference?

According to various sources on the web, it seems like the general concensus is that there isn't actually any wave-particle duality with quantum particles. For example, this article implies that ...
0
votes
1answer
45 views

Double-slit experiment [closed]

Given the following wavelength: $\lambda = 1.75 \cdot 10^{-12}\ m$ This leads to the velocity of the electron (matter wave). First approach: $p = \dfrac{h}{\lambda}=m(v)v=m_e\gamma v$ [...] $v ...
10
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4answers
2k views

Electrons - What is Waving?

If an electron is a wave, what is waving? So many answers on the internet say "the probability that a particle will be at a particular location"... so... the electron is a physical manifestation of ...
2
votes
0answers
37 views

Group velocity and calculating wavelength [closed]

A stone tossed into a body of water creates a disturbance at the point of impact that lasts for Dt = 4.0s. Measurements indicates that the wave speed is v = 25 cm/s. (a) Over what distance on ...
5
votes
3answers
125 views

How does a wave packet get scattered?

Particles can be represented as wave packet. So how do particles get scattered? Waves superimpose on one another, they don't bounce off of on one another. It can be seen from picture there is a ...
2
votes
2answers
95 views

Yet another double slit experiment

If single particles shot one at a time at the double slit do exhibit wave-like behavior, then if we put another screen right between the slits and perpendicular to the first screen, won't we also see ...
2
votes
4answers
1k views

How do we know particles exist? Aren't they just waves?

In the book "A Briefer History of Time" Stephen Hawking wrote: The unpredictable, random element comes in only when we try to interpret the wave in terms of the positions and velocities of ...