Stokes shift is the difference (in wavelength or frequency units) between positions of the band maxima of the absorption and emission spectra (fluorescence and Raman being two examples) of the same electronic transition. It is named after Irish physicist George G. Stokes.

Choose your answer: based on the paragraph above can we conclude that "George Stokes knew Thomas Edison."?

OPTIONS: --Yes; --It's impossible to say; --No;
I think the answer is
It's impossible to say