Accurate Atomic Data and Solar Photospheric Spectroscopy

In this review we present further requests to atomic spectroscopists for very accurate atomic data, which should "provide a new tool for the investigation of the solar atmosphere". We insist upon the necessity of using very accurate wavelengths, ionization potentials, partition functions, damping constants and transition probabilities in solar photospheric spectroscopy studies in order to refine our knowledge of the physical conditions, physical processes and abundances of the elements in the solar photosphere.