All Questions
36
questions
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63
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Is there a limit to the number of observers to a wireless broadcast due to quantum mechanics?
My question seems obvious but nobody is talking about it. The way I understand it, an electromagnetic wave collapses to a particle when observed. This goes for electrons and photons but I imagine the ...
6
votes
3
answers
711
views
Can you have diffraction without a slit, simply by reducing the size of light source?
Since the diffraction pattern only depends on the width of the slit and the wavelength of light, could we see a diffraction pattern if we use an extremely small (to the order of micrometers) light ...
4
votes
0
answers
91
views
On sum of amplitudes in Wave Mechanics
Consider Schroedinger equation, which I write in the form $$ (\mathscr{L}+V)\psi=0$$where $\mathscr{L}$ is the kinetic and time-derivative operator. Now, imagine I have two point sources 1,2 with ...
- 1,752
0
votes
3
answers
141
views
In double-slit experiment, if one directs coherent light from two sources into each slit separetely, is ridges pattern expected to be seen?
I've read several QA here:
Is coherent light required for interference in Young's double slit experiment?
Why can't we duplicate the double slit experiment with two parrallel sources of light.....
- 516
2
votes
1
answer
178
views
Time delay between consecutive photon absorptions by atoms/molecules?
We are just getting introduced to some basics of quantum physics at school and in my nationally prescribed school book, its written that:
Planck assumed that radiation could be subdivided into ...
- 1,168
-1
votes
2
answers
160
views
Does frequency equal mass?
If e equals mass and if frequency equals energy then is it correct to conclude that frequency equals mass?
- 4,711
1
vote
5
answers
309
views
Does the quantum nature of light arise from its interaction with matter? [closed]
I have a desire to reconcile the results of the photoelectric effect with the Maxwellian picture of electromagnetic radiation. I wish to explore, the possibility that the quantum nature of the photon ...
- 129
0
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0
answers
41
views
Can we maintain a standing wave in a slowly growing box?
I believed that the answer to that simple question was 'yes', until I was thinking more about it recently, and now I have a doubt.
Consider a simple standing wave in a 1D "box" of length $...
- 7,592
0
votes
1
answer
282
views
Wave function and speed of light
When a photon is generated, it travels at the speed of c in the form of propagating electromagnetic wave until the photon interacts with something else to have its energy absorbed or converted. Is ...
- 9
0
votes
2
answers
82
views
May rays in geometric optics be considered as trajectories of photons?
de Broglie's motivation to introduce matter waves was an analogy with wave-corpuscular dualism of light: he conjectured that also electrons may behave sometimes like particles and sometimes like waves....
- 2,226
4
votes
2
answers
2k
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Why is intensity of an electromagnetic wave independent of its frequency?
In electromagnetic theory, we define electromagnetic waves as two fluctuating electric and magnetic field which travel in a direction. We have a property called Poynting vector which is the power per ...
- 51
2
votes
1
answer
403
views
Spacetime as a medium for electromagnetic waves? [closed]
We typically break waves into two separate types mechanical waves and electromagnetic waves and treat them entirely differently based primarily on the observation that electromagnetic waves don't ...
user280703
0
votes
1
answer
172
views
Intensity of EM waves
For a mechanical wave, the energy transported is directly proportional to the square of its amplitude.
In quantum physics, the energy of a photon is proportional to its frequency.
Will changing the ...
- 117
1
vote
1
answer
298
views
In the Double Slit Experiment, what type of wave are we talking about?
I was learning about the double slit experiment and simple explanation is that there is wave interference. Although I do not quite understand the wave bit. We know that light is a wave.
But in the ...
- 39
3
votes
1
answer
398
views
Can de Broglie Waves have frequency, just because we know de Broglie wavelength formula? [duplicate]
Sub-question if Yes: de Broglie wave is also often called the matter-wave. While we can find the frequency of an Electromagnetic Radiation from its wavelength $(c=\nu\lambda)$. $c$, in this case, is ...
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