Fotogrāfija 1: Illustrations about radioactivity - CNRS laboratory in Strasbourg
Fotogrāfija 2: Illustrations about radioactivity - CNRS laboratory in Strasbourg
Fotogrāfija 3: Illustrations about radioactivity - CNRS laboratory in Strasbourg
Fotogrāfija 4: Illustrations about radioactivity - Geiger counter - CNRS laboratory in Strasbourg
Fotogrāfija 5: Illustrations about radioactivity - Geiger counter - CNRS laboratory in Strasbourg
Fotogrāfija 6: Illustrations about radioactivity - Geiger counter
Fotogrāfija 7: Illustrations about radioactivity - Geiger counter
Fotogrāfija 8: Illustrations about radioactivity - Geiger counter
Fotogrāfija 9: Illustrations about radioactivity - Geiger counter
Fotogrāfija 10: Illustrations about radioactivity - Geiger counter