Basic Principle (IMAGE) Forschungszentrum Juelich Caption This is the basic principle of 3-D reconstruction by photoelectron spectroscopy: electrons released from the electron shell by photons enable conclusions to be drawn on the orbitals. The three-dimensional structure of the orbital can be reconstructed from experiments at different photon energies. Credit Forschungszentrum Jülich Usage Restrictions Please use image only in conjunction with reports about Forschungszentrum Jülich. Please give credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.