Radioactivity

Radioactivity is the phenomenon in which some unstable nuclei transform into others with the emission of particles. Radioactivity is as old as the Universe and is present everywhere: in the stars, in the Earth and in our own bodies. In fact, man has been exposed to radiation since when he appeared on Earth. Radioactivity was discovered at the end of the 19th Century thanks to the work of Henry Becquerel and Pierre and Marie Curie who in 1903 received the Nobel Prize in Physics for their important contribution to scientific knowledge. They discovered that certain minerals possessed the property of spontaneously emitting radiation: these minerals, such as uranium, radium and polonium, for example, were called “active” and the phenomenon regarding the emission of radiation was called “radioactivity”.

Special reports

From the Multimedia section

  • energy

    Nuclear reactors under construction

    Look

    energy

    World uranium mining production by countries in 2016

    Look

    energy

    Nuclear planned reactors

    Look
  • energy

    Electricity from fission

    Look

    energy

    Enrico Fermi

    Look

    energy

    Inventor of X-rays

    Look
  • energy

    Nuclear reactor

    Look

    energy

    Uranium

    Look

    energy

    Uranium bar

    Look
  • energy

    Nuclear reactors under construction

    Look

    energy

    World uranium mining production by countries in 2016

    Look
  • energy

    Nuclear planned reactors

    Look

    energy

    Electricity from fission

    Look
  • energy

    Enrico Fermi

    Look

    energy

    Inventor of X-rays

    Look
  • energy

    Nuclear reactors under construction

    Look
  • energy

    World uranium mining production by countries in 2016

    Look
  • energy

    Nuclear planned reactors

    Look

Facts

  • ITER fusion reactor

    The reactor that will be able to produce electronuclear energy without risk of explosion or radioactive waste...

    Where does energy come from?

    Every day the Earth receives enough solar energy to satisfy the global energy need...

    Electricity and electrons

    In all electric plants, excluding photovoltaic solar plants, mechanic energy is transformed into electric energy through the same basic procedure...

  • Peat and peat-bogs

    The age of coal starts towards the mid 1600s, stimulated by the need for finding an alternative energy source to…

    Geographical distribution of energy

    Every day the Earth receives enough solar energy to satisfy the global energy need. Unfortunately we cannot exploit all this…

    Orimulsion

    In order to improve supply security, and therefore the diversification of sources to produce electric energy...

  • Cracking operations

    At the end of the fractional distillation, long hydrocarbon molecules can be transformed into lighter molecules by means of more…

    A hydrogen house

    In Settimo, a municipality close to Turin, the first Unité d’Abitation has been created...

    Hydrogen from biomass

    Hydrogen is an energy carrier that allows to generate energy in an environmentally sustainable way...

  • 16 May 2011

    ITER fusion reactor

    The reactor that will be able to produce electronuclear energy without risk of explosion or radioactive waste...

    2 March 2011

    Where does energy come from?

    Every day the Earth receives enough solar energy to satisfy the global energy need...

  • Electricity and electrons

    In all electric plants, excluding photovoltaic solar plants, mechanic energy is transformed into electric energy through the same basic procedure...

    Peat and peat-bogs

    The age of coal starts towards the mid 1600s, stimulated by the need for finding an alternative energy source to…

  • Geographical distribution of energy

    Every day the Earth receives enough solar energy to satisfy the global energy need. Unfortunately we cannot exploit all this…

    Orimulsion

    In order to improve supply security, and therefore the diversification of sources to produce electric energy...

  • 16 May 2011

    ITER fusion reactor

    The reactor that will be able to produce electronuclear energy without risk of explosion or radioactive waste...

  • 2 March 2011

    Where does energy come from?

    Every day the Earth receives enough solar energy to satisfy the global energy need...

  • Electricity and electrons

    In all electric plants, excluding photovoltaic solar plants, mechanic energy is transformed into electric energy through the same basic procedure...