The uncertainty principle of Heisenberg ( The small owl and the quantic owl )

The animated image illustrates this principle: At night in the woods, a lover of nature hears the hoot of an owl. If he wants, at the same time, to see the bird, he will have to point at him a flashlight: It is a bet that the owl, dazzled, will stop his song. Hence the insoluble dilemma: One can not at the same time hear and see the owl ... Alas!