FTIR Spectroscopy
External Links:
NIST Computational Chemistry Comparison and Benchmark Database (CCCBDB)
[New Interface] https://cccbdb.nist.gov/introx.asp
[Old Interface] https://cccbdb.nist.gov/intro.asp
NIST Chemistry WebBook
http://webbook.nist.gov/chemistry/
IUPAC Quantities, Units, and Symbols in Physical Chemistry, the "Green Book".
https://iupac.org/what-we-do/books/greenbook/
(with an energy-unit conversion table on the inner back cover).
Spectroscopy Magazine: