Converting cm to cm-1: How to Calculate 1/37

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SUMMARY

The discussion focuses on converting measurements from centimeters (cm) to inverse centimeters (cm-1) using the example of an interval of 37 cm. The correct calculation for this conversion is 1/37, resulting in approximately 0.027 cm-1. Additionally, the conversation highlights a specific case involving a Lithium atomic spectrum with a wavelength of 0.162 Å, which corresponds to 0.36 cm-1. Participants emphasize the importance of understanding the quantities involved, particularly distinguishing between wavelength and wave vector magnitude.

PREREQUISITES
  • Understanding of unit conversions, specifically between centimeters and inverse centimeters.
  • Familiarity with atomic spectra and the significance of wavelength measurements.
  • Knowledge of wave vector concepts in physics.
  • Basic mathematical skills for performing reciprocal calculations.
NEXT STEPS
  • Learn about the relationship between wavelength and wave vector in quantum mechanics.
  • Study unit conversion techniques for various physical quantities.
  • Explore the significance of atomic spectra in spectroscopy.
  • Investigate the implications of different units in physical equations and their applications.
USEFUL FOR

Students and professionals in physics, particularly those studying spectroscopy, quantum mechanics, or anyone involved in calculations related to atomic measurements and conversions.

agentas
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If i got my interval is 37 cm .And if i want to get in cm-1 I have to do this 1/37=0,027cm-1 right?
 
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Yes, that's fine.
 
agentas said:
If i got my interval is 37 cm .And if i want to get in cm-1 I have to do this 1/37=0,027cm-1 right?

You want to get WHAT in cm-1? Not the same interval, I hope.
 
from some Lithium atomic spectrum which is equal 0.162A.This corresponds to 0.36cm-1
I still struggling to get this answer ,because if i take reciprocal of of it i can not get 0,36cm-1
 
0.162A is not even close to 1/3rd of cm. You are off by many orders of magnitude.
 
It would be a good start to figure out what are the quantities you are dealing with.
What quantity is given in A? Is it a wavelength?
And then what quantity do you want to calculate? Is it inverse wavelength or maybe the magnitude of the wave vector?
 

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