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Why don’t we see interface in situations where there are two sources of light?

20151213_144603.jpg

Is it because the two lights cancel out the interface? I have no idea.
Original post by Airess3
20151213_144603.jpg

Is it because the two lights cancel out the interface? I have no idea.


I think it might be something to do with phase difference, it's been a while though.
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Maker
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How do you see light?
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astro67
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Original post by Airess3
20151213_144603.jpg

Is it because the two lights cancel out the interface? I have no idea.


I hope you don't find it too frustrating to get a hint rather than the answer - the key issue is that the light sources are 'incoherent' - if that doesn't ring a bell in itself, you should be able to look up the keyword in the context of interference in your textbooks or online.
Original post by astro67
I hope you don't find it too frustrating to get a hint rather than the answer - the key issue is that the light sources are 'incoherent' - if that doesn't ring a bell in itself, you should be able to look up the keyword in the context of interference in your textbooks or online.


So there's destructive interference.

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