How Do You Calculate the Spacing Between Diffraction Grating Grooves?

AI Thread Summary
To calculate the spacing between diffraction grating grooves, first convert grooves per inch to grooves per meter by multiplying the number of grooves (13400) by the conversion factor (39.37). This results in approximately 527558 grooves per meter. However, the key question is determining the actual spacing, which requires calculating the distance between each groove. The spacing can be found by taking the reciprocal of the number of grooves per meter. Properly addressing the units and understanding the distinction between grooves per meter and groove spacing is crucial for accurate homework submissions.
J89
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Homework Statement


You will need to know the spacing d between grooves on the diffraction grating used in the lab. If the this diffraction grating has 13400 grooves per inch, how many grooves per meter does it have?




Homework Equations


1 inch = 39.37 meters


The Attempt at a Solution



You just multiply 39.37 by 13400 and get 527558..however, the only question is what is the units dealing with groove? I insert in my online homework assignment..it's marked as wrong!
 
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J89 said:
You just multiply 39.37 by 13400 and get 527558..however, the only question is what is the units dealing with groove? I insert in my online homework assignment..it's marked as wrong!
To convert from grooves per inch to grooves per meter, yes you multiply as you did. But is that the question? Or is the question what is the spacing between the grooves?
 

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