History of the Discovery of Radioactivity (1)

The Sun

The largest radioactive source which is close to Earth

Wilhelm Conrad Roentgen

Discovered X-ray

The first Nobel Prize in Physics

Receive by Wilhelm Conrad Roentgen in 1901

Careers in the field of radioactivity

Nuclear physicst, nuclear engineer and nuclear medical specialist

Antoine Henri Becquerel

Discover radioactivity in 1896

Marie dan Pierre Curie

Detected radioactive radiation through its ionising power and not through photographic effect

Marie dan Pierre Curie

They extracted two radioactive elements, polonium and radium

Radium

Emit gamma rays

Gamma rays

Used in medical field to treat cancer

Radioactivity

Random and spontaneous decay process of an unstable nucleus by emitting radioactive radiation