1 Introduction to Radiation and Radioactivity • Is your notebook radioactive? – Of course. Many of the elements found in everyday items include radioactive isotopes. – Concern is about radioactivity over and above what occurs naturally; a question of amount, not presence. • An atom is radioactive when changes occur in the nucleus resulting in the release of energy.
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1 Introduction to Radiation and Radioactivity Is your notebook radioactive? –Of course. Many of the elements found in everyday items include radioactive.
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1Introduction to Radiation and Radioactivity
• Is your notebook radioactive?– Of course. Many of the elements found in everyday
items include radioactive isotopes.– Concern is about radioactivity over and above what
occurs naturally; a question of amount, not presence.
• An atom is radioactive when changes occur in the nucleus resulting in the release of energy.
• Matter and energy are interconvertible, but are not the same.– A radioactive material gives off radiation.– You can be contaminated with radioactive material,
but not contaminated with radiation.– You can determine how radioactive a material is by