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(cm)^-1 to joules!!!?????
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
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5 posts
• Page 1 of 1
(cm)^-1 to joules!!!?????
by mkevb1 » Fri Oct 05, 2007 10:27 am
how do i convert (cm)^-1 to joules!!!?????
- mkevb1
by Guest » Fri Oct 05, 2007 6:11 pm
In what context? The only context I can think of that makes any sense is the energy of a photon.
Inverse centimeters are sometimes used as a "wave number" the number of cycles of any electromagnetic wave in a centimeter (mostly used for infrared and light). It is a quasifrequency, as a real frequency would be the number of waves in one second or about 3 x 10^8 m. Hence real frequency is 3 x 10^10 greater than this wave number.
The energy of a photon is given by E = h*nu or h*c*/lamda where nu is frequency and lambda is wavelength. h is Planck's constant, Google for value
Inverse centimeters are sometimes used as a "wave number" the number of cycles of any electromagnetic wave in a centimeter (mostly used for infrared and light). It is a quasifrequency, as a real frequency would be the number of waves in one second or about 3 x 10^8 m. Hence real frequency is 3 x 10^10 greater than this wave number.
The energy of a photon is given by E = h*nu or h*c*/lamda where nu is frequency and lambda is wavelength. h is Planck's constant, Google for value
- Guest
Re: (cm)^-1 to joules!!!?????
by chemhelp » Wed Mar 09, 2011 12:15 am
same as above but speed of light needs to be in cm i think 3 x 10^10 cm/s as opposed to 10^8 m/s
- chemhelp
Re: (cm)^-1 to joules!!!?????
by bahardoost » Sun Mar 11, 2012 11:40 pm
1 cm−1=1.986*10−23 J.
source:
A Critical Compilation of Atomic Transition Probabilities for Neutral
and Singly Ionized Iron
J. R. Fuhra… and W. L. Wiese
source:
A Critical Compilation of Atomic Transition Probabilities for Neutral
and Singly Ionized Iron
J. R. Fuhra… and W. L. Wiese
- bahardoost
More info
5 posts
• Page 1 of 1