How to convert length units to inverse cm

AI Thread Summary
Converting length units like angstroms and nanometers to inverse centimeters (cm^-1) is fundamentally problematic because they represent different concepts: length versus spatial frequency. The discussion highlights that these units cannot be directly converted without context. A user mentions a specific application involving a Fabry-Perot interferometer, suggesting a potential need for such conversions in that context. However, the conversation emphasizes that while creative unit combinations like barns per centimeter could exist, they may not serve a practical purpose. Understanding the distinction between these units is crucial for accurate scientific communication.
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how to convert length units to inverse cm.For example arngstroms,nanometers to cm^-1.Thanks
 
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Please elaborate what you are trying to do.

In general - you can't, as one is a length unit, other is a spatial frequency unit. Different things.
 
Borek said:
Please elaborate what you are trying to do.

In general - you can't, as one is a length unit, other is a spatial frequency unit. Different things.

i want to use it with Fabry-Perot interferometer
 
Well, you could have barns per centimer, or something like that. Not sure why you'd want it, but you cold.
 

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