Radioactivity

What is Alpha ?

Where is alpha used and how?

What is beta?

Where is beta used and how?

What is gamma radiation?

Where and how is gamma radiation used?

How is radiation measured?

Tracers?

What happened to radioactivity over time?

What is radiation?

What is background radiation?

How do alpha particles ionise?

What is half live?

Does radioactivity ever reach zero?

how do beta particles ionise