Help Identify the Missing Equation in This Game - Sources Welcome!

[R G]

I am invlolved in a game (with some friends) part of which is to
identify some equations. All sources of info are okay to pursue, so I
thought I would ask if you can help identify the only remaining
equation. It is driving me nuts. (If you have a confirming website,
that would be even better, but not
necessary.).

Thank you so much.


7. http://i3.tinypic.com/wilrmd.jpg

 

[maverick280857]

The image is too dark to permit comprehension.

 

[dav2008]

Is this what the picture says?

$$\frac{n}{N_0}=\frac{1}{(m_1+c_1)^2}-\frac{1}{(m_2+c_2)^2}$$

 

[R G]

Is this what the picture says?

$$\frac{n}{N_0}=\frac{1}{(m_1+c_1)^2}-\frac{1}{(m_2+c_2)^2}$$

Yes, that's it exactly. Any leads or ideas that you could provide would be so appreciated.

Thank you so much.

 

[arildno]

Seems like some sort of molecule number/concentration formula to me, but don't regard this as a hint, please.

 

[R G]

found it

found it ---

http://www.airandspace.org/encyclopedia/Rydberg_formula