As simple as that all may seem, not every manufacturer participates in testing or publishes CADR information, and some provide either a range of scores or a single composite score instead of three ...

When you shine a flashlight into a glass of water, the beam bends. That simple observation, familiar since ancient times, ...

The Irish mathematician and physicist William Rowan Hamilton, who was born 220 years ago last month, is famous for carving ...

Most earthquake energy turns into heat rather than ground shaking, sometimes hot enough to melt rock in microseconds. MIT’s ...

Cold atoms could also potentially measure much lower vacuum pressures than ion gauges can. The current lowest pressure they’ve reliably measured is around 10 -9 Pa, and NIST scientists are working on ...

As the name suggests, particle accelerators involve accelerating subatomic particles to incredibly high speeds and smashing ...

Two mathematicians have proved that a straightforward question — how hard is it to untie a knot? — has a complicated answer.

In January I wrote a piece titled “ 5 Physics Equations Everyone Should Know .” Lots of you weighed in with your own ...

Researchers have for the first time measured the speed of proton transfer through charged water, a fundamental chemical ...