The museum is divided into three sections.

1) The historical collections.The vast exhibition (several thousand items) is displayed in finely made cabinets and large display windows illuminated with optical fibres along the large corridor of the Physics Department.

2) The apparatuses and instruments for physics of the 20th century, up to the present.This section is lively, in constant evolution and updated frequently.The work environments and typical experimental situations in modern physics have been reproduced using only original and coeval furnishings, equipment and instruments.

3) The interactive section of Physical Experiments is available to the public. Prof. Guido Pegna, former scientific responsible of the Physics Museum of Sardinia has been active in transforming the museum into a place where visitors can interact directly with experiments and exhibits made available to them.The aim is to create a situation in which it is possible to come into direct contact with science and a way of approaching science that is pleasant, captivating, a source of curiosity and an incentive to participation. This project differs from the methods of dissemination that are typical of "science centres" of the Anglo-Saxon school in two aspects:a) attention to historical, social and philosophical aspects peculiar to European culture; b) great stress laid on the idea that doing leads to understanding.