Cold atom source image (IMAGE) Optica Caption Researchers designed a cold atom source that uses four mirrors arranged like a pyramid and placed in a way that allows them to slide past each other like the petals of a flower. This creates an adjustable hole at the top of the pyramid through which the cold atoms are pushed out. This image depicts the device. Credit Christopher Foot, Oxford University 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.