This course invites students to discover how atoms and radiation contribute to the study of the past, the protection of the environment, advances in medicine, and our understanding of energy. Designed for students from a wide range of academic backgrounds, the course approaches these topics in an accessible and engaging way, with emphasis on real-world examples, direct experience, and hands-on exploration.

A central feature of the course is its strong laboratory component.
Students will not only be introduced to basic ideas about atoms and radiation, but will also work directly with detectors, samples, and laboratory instruments. Through practical exercises, they will explore how radiation is measured, how materials can be analyzed, and how scientific tools are used in real research settings. Activities will include experiments with gamma-ray detection and attenuation, X-ray fluorescence analysis, aerosol measurements, accelerator-based techniques, radiocarbon applications, and sample preparation for accelerator mass spectrometry.

The course also includes guided visits to major research facilities of NCSR “Demokritos”, including the reactor and accelerator, giving students a rare opportunity to encounter these environments first-hand. By combining classroom discussion, laboratory experience, and facility visits, the course presents the atom not as an abstract or intimidating concept, but as a fascinating and useful way of exploring the material world and contributing to health, heritage, environmental awareness, and a better future.

Topics covered in the course include the structure of the atom, cultural heritage analysis, aerosol and environmental studies, ion beam analysis, medical applications, radiocarbon dating, accelerator mass spectrometry, nuclear energy, and radiation in everyday life.