Measurement of the cosmic radiation flux in water as a function of detector depth.

High school students and teachers perform Domenico Pacini's experiment in a modern key on the origin of the natural ionizing radiation that surrounds us. With the collaboration of INFN researchers and the University, the schools prepared for about 2 months for this event, collecting a large amount of data in the air and analyzing them. Then they went to a lake where they performed the measurements at different depth in water.