G
o
o
g
l
e
×
Please click
here
if you are not redirected within a few seconds.
All
Images
Books
Videos
Maps
News
Shopping
Search tools
Any time
Any time
Past hour
Past 24 hours
Past week
Past month
Past year
All results
All results
Verbatim
Franck–Condon principle
View all
The Franck–Condon principle is a rule in spectroscopy and quantum chemistry that explains the intensity of vibronic transitions.
Wikipedia