Sample glasses (IMAGE) Ural Federal University Caption Scientists select the optimal composition of glasses, which will have strong protective properties, clarity, and environmental friendliness. Credit UrFU / Anastasia Farafontova. Usage Restrictions Photos may be freely used to illustrate this topic, but please credit the author of the image: UrFU / Anastasia Farafontova. License Original 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.