Difference between diffraction and prism

AI Thread Summary
The discussion revolves around distinguishing light that has passed through a prism versus light that has gone through a diffraction grating, particularly when only the resultant white light is visible. Participants express confusion over the phrasing of the original question, suggesting it may be a translation issue. It is noted that a prism bends all light, potentially resulting in a black area where white light lands, while a diffraction grating allows white light to pass through, creating a bright central maximum. The conversation emphasizes the need for the asker to clarify their understanding and attempt to research the topic further. Ultimately, the key difference lies in the behavior of light as it interacts with each medium.
splinn
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Homework Statement



How to make difference between the light that has traveled through a prism and the light that has traveled through a diffraction grating when only place that is visible to the viewer is the place where the white light lands?


The Attempt at a Solution



Sorry, but i have no idea how to make a difference
 
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Welcome to PF.
Is that the exact wording of the question? The phrase "make a difference" is not at all clear. Nor is "the place where the white light lands". Is it a translation from another language?

If I had to answer it as it stands I would say that the prism bends all the light so "the place where the white light lands" would be black. The grating passes white light straight through to the bright central maximum, so "the place where the white light lands" would be white.
 
I guess splinn is referring to the differences in the white light spectra produced by a prism and a grating.splinn,I suggest that firstly you make an attempt by doing some research and then report back here if you need extra help.
 
Yes it is translated from another language. As i come to think about it, it's kind of confusing to myself too what exactly the asker ment by this question. In my Physics exam professor gives me a random subject and I have to demonstrate my skills to discuss physically correct on this subject. One of those questions is this.

Delphi51-s answer might be correct.

Dadface, suppose the professor ment that i have to write what is different of the white light from prism and from grating by only seeing that white part of light. Is there a way to make a difference?
 
Splinn,you have yet to show us any attempt at a solution.What do you know so far?
 

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