Highly Purified Silicon (IMAGE) Princeton University, Engineering School Caption The highly purified sample of silicon-28 used in the experiment led by Lyon has a very low magnetic signature at the atomic level, and therefore does not disrupt the spin of the electrons. Credit Photo by John Jameson, Princeton University Usage Restrictions For non-commercial use 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.