CC BY 3.0 DEKierzek, JoachimKunicki-Goldfinger, Jerzy J.Kasprzak, Aleksandra J.2024-01-052024-01-052000https://oa.tib.eu/renate/handle/123456789/14094https://doi.org/10.34657/13124Natural radioactive components of historical glasses and two methods of the respective measurement of the radioactivity are discussed. The evaluation of radioactivity of glass objects using a Geiger-Müller counter and high-resolution gamma ray spectrometry is presented. A survey of the Warsaw National Museum glass collection with a Geiger-Müller counter allowed distinguishing the vessels made of potassium and sodium glass by their level of natural radioactivity. Gamma spectrometry, on the other hand, enables estimating a specific radionuclide content. Special attention is given to uranium glasses. One 19th Century Bohemian vessel, coloured with a uranium compound, was carefully examined using gamma spectrometry. K2O and U content were estimated to be 16.2 and 0.33 %, respectively.enghttps://creativecommons.org/licenses/by/3.0/de/660Article