How can scientists weigh a neutrino? (VIDEO) DOE/Pacific Northwest National Laboratory This video is under embargo. Please login to access this video. Caption How can scientists weigh a neutrino? Credit (Animation by Sara Levine | Pacific Northwest National Laboratory) Usage Restrictions No restrictions. License Public Domain 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.