Phys .org: Researchers use quantum mechanics to see objects without looking at them

Phys .org: Researchers use quantum mechanics to see objects without looking at them . “Imagine that you have a camera cartridge that might contain a roll of photographic film. The roll is so sensitive that coming into contact with even a single photon would destroy it. With our everyday classical means there is no way there’s no way to know whether there’s film in the cartridge, but in the quantum world it can be done.”