Linked Questions

10
votes
2answers
9k 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 ...
0
votes
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...
0
votes
1answer
762 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 ...
0
votes
2answers
123 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?
0
votes
1answer
181 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 ...
1
vote
0answers
76 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 ...
1
vote
1answer
56 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 ...
0
votes
0answers
66 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.
3
votes
0answers
66 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 ...
1
vote
0answers
63 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 ...
3
votes
0answers
30 views

Diffraction of rays [duplicate]

To all the physics experts here this might sound like a stupid question, but I give it a try: This is a sketch of how you usually learn about the effect of diffraction in an experiment: Now I was ...
0
votes
0answers
24 views

Energy on destructive interference [duplicate]

Where does the energy go when there is destructive interference between two waves of light which are equal in amplitude? As we know energy can neither be created nor destroyed. Then the energy ...
80
votes
3answers
5k views

Why do travelling waves continue after amplitude sum = 0?

My professor asked an interesting question at the end of the last class, but I can't figure out the answer. The question is this (recalled from memory): There are two travelling wave pulses moving in ...
14
votes
4answers
2k views

Does the total kinetic energy change during an elastic collision?

If two balls of same mass with speed $v$ and $-v$ undergo an elastic collision, the kinetic energy will be the same after the collision as before. However, during the collision, does it also remain ...
21
votes
4answers
3k views

Why is it difficult for water waves to cancel each other?

I have read that destructive interference between water waves always leads to the creation of smaller waves which eventually die out. Why, in particular for water waves, it is hard to cancel each ...

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