Cold atom source (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. The images show a rendering 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.