Line-spectrum (IMAGE) Helmholtz Association Caption This is the K1-XV-line-spectrum of beryllium-oxide. Credit Graphic: HZB/Schiwietz Usage Restrictions Graphic: HZB/Schiwietz 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.