It was originally derived by Roger James Elliott to describe linear absorption based on properties of a single electron -- hole pair .
The Elliott formula describes analytically , or with few adjustable parameters such as the dephasing constant , the light absorption or emission spectra of solids .
Elliott formula was originally derived by Roger James Elliott to describe linear absorption based on properties of a single electron -- hole pair .
The Elliott formula describes analytically , or with few adjustable parameters such as the dephasing constant , the light absorption or emission spectra of solids .