FOR the purposes of laboratory or lecture experiments it is convenient to use a pitch so high that the sounds are nearly or altogether inaudible. The wave-lengths (1 to 3 cm.) are then tolerably small ...

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Does the universe notice that we're paying attention to a quantum experiment? The answer goes against everything we thought we knew.

Perhaps one of the most famous experiments in physics has been giving us the wrong message all these years. For nearly two centuries, the double-slit experiment has been providing a direct visual ...

Specifically, the study uncovers a new form of quantum interference in molecule scattering. Unlike the more familiar "diffractive" interference that affects scattering angles (as in the double-slit ...