  The muon is one of the first elementary particles discovered. It is also
known as heavy electron, and it's the main component of cosmic rays flux at sea
level. Its flow is continuous, 24h/7d, and it is free. It is natural and does
not have any radio protection banning or limitation to its use in schools and
can be managed safely by the students. AMELIE is a light, small and didactic
apparatus to measure the lifetime of the muons. It is useful tool to introduce
the modern physics, particle physics, particles instability and decay, special
relativity etc. It can be used for small didactic but complete experiments for
measurement of muon rate and lifetime, correction and equalization of data
collected etc. A useful instrument to introduce and teach the scientific method
to the students. Last but not least, do not contain any dangerous system like
high voltage or explosive gas and the cost is relatively cheap.
