The supermassive black hole at the heart of our galaxy spat out an enormous flare of radiation 3.5 million years ago that would have been clearly visible from Earth.
Astronomy
Oct 8, 2019
14
154
Fears that efforts to reduce air pollution could dramatically speed up the process of global warming have been allayed with the publication of a landmark new study.
Environment
Aug 2, 2019
8
1041
Condensation might ruin a wood coffee table or fog up glasses when entering a warm building on a winter day, but it's not all inconveniences; the condensation and evaporation cycle has important applications.
Condensed Matter
Jun 25, 2019
0
1
The formation of air bubbles in a liquid appears very similar to its inverse process, the formation of liquid droplets from, say, a dripping water faucet. But the physics involved is actually quite different, and while those ...
General Physics
Jun 17, 2019
1
246
Controlling individual droplets leads to more efficient self-cleaning surfaces and lab-on-a-chip implementations. University of Groningen professor Patrick Onck and colleagues from Eindhoven University of Technology have ...
General Physics
Jun 17, 2019
0
110
A decade ago a new idea was brought into the general scientific community—shedding water from condensers was more efficient by using surface tension to make microscopic water droplets "jump" off the surface. The idea took ...
Condensed Matter
May 28, 2019
3
134
In a new study, researchers have propelled water nanodroplets across a graphene surface at speeds of up to 250 km (155 miles) per hour—which, for comparison, is about twice as fast as a sprinting cheetah. The water droplets' ...
Splash some water on a hot skillet, and you'll often see the droplets sizzle and quickly evaporate. But if you really crank up the heat, something different happens. The droplets stay intact, dancing and skittering over the ...
Condensed Matter
May 6, 2019
0
111
Photoacoustic computed tomography (PACT) is a non-invasive hybrid imaging technique that excites biological tissues with light and detects the subsequently generated ultrasound to form images. PACT combines the advantages ...
Optics & Photonics
Apr 18, 2019
0
16
35,000 feet is standard cruising altitude for a commercial jet airplane, but at those lofty heights the air temperature plummets below -51 degrees Celsius and ice can easily form on wings. To prevent ice formation and subsequent ...
Plasma Physics
Apr 1, 2019
1
45
