Trap with Ions (IMAGE) Stockholm University Caption Strontium ion trapped in an electric field. The measurement on the ion lasts only a millionth of a second. Credit F. Pokorny et al., Usage Restrictions Free use of the media in connection to news article or feature with connection to Stockholm University. 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.