Attosecond Photoemission (IMAGE) Max-Planck-Gesellschaft Caption The inner attosecond laser pulse, shown here in blue, knocks electrons out of neon atoms; the relative start time of two different electrons is measured using the red beam. Credit Thorsten Naeser/MPI of Quantum Optics Usage Restrictions None 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.