Directional Emission of Light (IMAGE) University of Copenhagen - Niels Bohr Institute Caption The figure shows the calculations of the photon emission in the new directional photon source. If the spin of the electron points up, the photon is emitted in one direction (blue). If the spin of the electron points down, the photon is emitted in the opposite direction (red). Credit (Credit: Sahand Mahmoodian and Søren Stobbe, NBI). Usage Restrictions (Credit: Sahand Mahmoodian and Søren Stobbe, NBI). 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.