A 50-year-old theory that began as speculation about how an alien civilization could use a black hole to generate energy has been experimentally verified for the first time in a Glasgow research lab.
General Physics
Jun 23, 2020
32
30212
Researchers at the University of Arizona College of Engineering have come up with a novel way to help the U.S. Air Force dispose of stockpiles of dangerous chemicals – using nothing more than sound waves.
General Physics
Dec 16, 2013
0
1
(PhysOrg.com) -- Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction of all the ...
Astronomy
Mar 30, 2012
67
0
Wind turbines are a source of clean renewable energy, but some people who live nearby describe the shadow flicker, the audible sounds and the subaudible sound pressure levels as "annoying." They claim this nuisance negatively ...
Environment
Jun 5, 2018
3
28
Astronomers have constructed the first map of the universe based on the positions of supermassive black holes, which reveals the large-scale structure of the universe.
Astronomy
May 19, 2017
4
587
Researchers at the University of Cambridge have developed a novel technique for generating single photons, by moving single electrons in a specially designed light-emitting diode (LED). This technique, reported in the journal ...
General Physics
Feb 14, 2020
0
1854
Throughout decades of research on solar cells, one formula has been considered an absolute limit to the efficiency of such devices in converting sunlight into electricity: Called the Shockley-Queisser efficiency limit, it ...
Energy & Green Tech
Apr 18, 2013
15
0
A group of researchers from the Universidad Carlos III de Madrid (UC3M), in collaboration with Chinese scientists from the University of Nanjing (NJU), have designed a new type of acoustic insulation that enables sound waves ...
General Physics
Oct 29, 2019
0
322
For once, slower is better in a new piece of technology.
General Physics
Mar 5, 2015
0
52
The Farmington River, "the top priority watershed in the state," according to the state's environmental agency, has been named one of America's Most Endangered Rivers by the organization American Rivers.
Ecology
Apr 17, 2024
0
109
