Why IR peaks are inverted?

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Tags

1. #because
2. #vertical
3. #radiation
4. #amount
5. #absorption
6. #structural
7. #percentage
8. #spectra
9. #sample
10. #point
11. #bonds
12. #since
13. #transmittance
14. #organic
15. #molecule
16. #peaks
17. #infrared
18. #through
19. #interact
20. #downward
21. #provide
22. #considerable