# Linked Questions

2answers
10k views

### Where does energy go in destructive interference? [duplicate]

I have read that when two light waves interfere destructively, the energy contained within is transferred to other parts of the wave which have interfered constructively. However, I am having some ...
2answers
1k views

### can silence happens when 2 sound waves destroy each other [duplicate]

Hi is there any possibility that you located between 2 sound sources and u hear nothing? as we know 2 wave in opposite direction will destroy each other...
1answer
860 views

### What happens to the energy of photons when two light waves with plane wavefront interferes destructively? [duplicate]

When I began learning about optical interference, I came to know about destructive interference in which light waves cancel each other. How the energy is still conserved ? I found that the ...
2answers
135 views

### I heard light was its own antiparticle. What happens if two photons exactly cancel each other out? [duplicate]

In a laser multiple in-phase light rays add up into one strong coherent beam of light. What happens if two opposing laser beams sum up and exactly cancel each other out? Where does the lost energy go?
1answer
218 views

### Why is the phase of reflected wave during formation of standing waves 180 degrees? [duplicate]

Every time I read an article/text about standing waves they seem to specifically mention that whenever a wave pulse hits a hard boundary it gets reflected back with it's phase changed through 180 ...
2answers
110 views

### Where does the energy vanish in wave interference? [duplicate]

In my physics textbook there is a chapter on waves. Now there is a topic on interference. I don't understand why I get additional energy there. Suppose two waves presented as $Y_1=3\sin(\omega t)$ and ...
1answer
80 views

### Destructive interference in vacuum (energy conservation) [duplicate]

The following question was proposed by a student durante a lecture for a grad course in EM. What happens to the energy of an EM wave during destructive interference in vacuum, in regards to the ...
0answers
92 views

### When two photons annihilate each other through destructive interference, where does the energy go? [duplicate]

When two photons annihilate each other through destructive interference, where does the energy go? Perhaps this is only answered by ‘wave type’ questions and answers? Does the conservation of energy ...
2answers
55 views

### What happens to the energy when two waves completely interfere destructively? [duplicate]

this question has been asked many times and none seem to completely answer or i am unable to understand the answers So let us consider two mechanical transverse waves traveling in opposite directions ...
0answers
79 views

### If two waves cancel out, where does the energy go? [duplicate]

Imagine we have a wave with a certain frequency. We can calculate the energy of this wave with the equation $E=hf$, where $h$ is the Planck constant and $f$ the frequency Now, we can create a second ...
0answers
67 views

### Complete destructive interference of light [duplicate]

in the below image,will there be complete destructive interference when s4 is placed in front of s3 and where does that energy go.can it be extracted from the system.
0answers
65 views

### a question of optical interference and it's energy propagation [duplicate]

When I am thinking about the interference of two laser beams, a curious question often comes to my head: Take a Mach-Zehnder interferometer as example and suppose the frequency of the leaser beams is ...
1answer
50 views

### How energy is conserved in destructive interference of plane waves? [duplicate]

Let us consider two plane waves of same amplitude and frequency but having 180 degrees phase difference.Both the waves are having energy E in them which is directly proportional to the square of the ...
0answers
43 views

### Total Destructive Interference [duplicate]

In the total destructive interference of a wave, the peak of one wave, perfectly aligns with the trough of another wave (assuming they have the exact same amplitude and phase), causing the waves to ...
0answers
37 views

### Photon Interference in a double slit experiment [duplicate]

I have been trying to understand interference of photons. I used to think of a photon like a localized wave, with an electric and magnetic field travelling perpendicular to each other, each possessing ...

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