“Second sound is the hallmark of superfluidity, but in ultracold gases so far you could only see it in this faint reflection of the density ripples that go along with it,” lead author Martin Zwierlein ...

In terms of sound quality, only Bowers & Wilkins’ Pi8 comes close to the pristine audio performance of the FoKus Rex5. Unfortunately, those earbuds don’t offer a complete package either.

This is all on top of superb audio quality. In our best headphones roundup, we note that the sound from these headphones is "Big, nuanced, and full of character. They pick out details within a ...

For the first time, MIT scientists have successfully imaged how heat actually travels in a wave, known as a “second sound,” ...