‘Time exists in relation to movement, taking this word in the widest sense given to it by the ancients as ‘something that changes’: changes appearance, position, quantity, colour, configuration. Time is also related to two other notions, that of regularity and that of irreversibility. The exhibition cannot centre therefore on time as such, but rather on time in relation to these ‘other things’, time and space, time and music, time and painting, etc. meaning the role of time in the scientific, artistic and perceptive worlds. Hence the sub-title of ‘test’, i.e., something that documents such relations; ‘end-of-millennium’ because during the nineties, and even more in the sixties and seventies, points of view, chaotic phenomena, revision of Einstein’s theory of relativity were reached…, that open up new ideas on such a commonplace yet fleeting and elusive fact like time. The exhibition is split into three sections: the time of science, the time of art, the time of perception. The illustrated panels are joined by experimental devices that visitors can try for themselves (Newton’s bucket experiment, chaotic pendulums, perception tests, etc.), useful and interesting object for meditating and intervening with respect to the subjective and universal passing of time.’