News tagged with vacuum energy
Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)
(PhysOrg.com) -- During the past few years, CERN physicist Dragan Hajdukovic has been investigating what he thinks may be a widely overlooked part of the cosmos: the quantum vacuum. He suggests that the quantum vacuum has ...
Feb 01, 2012 |
4.8 / 5 (73) |
143
|
Fuel for fusion
Oak Ridge National Laboratory's Fusion Pellet Fueling Lab has been at the center of design and testing of plasma fueling systems for tokamak research applications for decades. Since the mid-1970s, lab researchers ...
Jan 06, 2012 |
3.3 / 5 (3) |
3
Feeling the heat: 30 tons of fine control for fusion plasmas
A major upgrade to the DIII-D tokamak fusion reactor operated by General Atomics in San Diego will enable it to develop fusion plasmas that can burn indefinitely. Researchers installed a movable, 30-ton particle-beam ...
Nov 10, 2011 |
not rated yet |
1
Shining new light on dark energy with galaxy clusters
(PhysOrg.com) -- Scientists' murky understanding of dark energy may have just gotten a little clearer, thanks to recent work by a team of researchers that includes astrophysicist Neelima Sehgal of the Kavli ...
Dec 09, 2010 |
4.8 / 5 (10) |
12
|
Superconductors face the future
Futuristic ideas for the use of superconductors, materials that allow electric current to flow without resistance, are myriad: long-distance, low-voltage electric grids with no transmission loss; fast, magnetically ...
Sep 10, 2010 |
4.9 / 5 (12) |
0
|
Searching for dark energy with the whole world's supernova dataset
The international Supernova Cosmology Project (SCP), based at the U.S. Department of Energy's Lawrence Berkeley National Laboratory, has announced the Union2 compilation of hundreds of Type Ia supernovae, ...
Apr 21, 2010 |
4.5 / 5 (11) |
16
|
Lower-cost solar cells to be printed like newspaper, painted on rooftops
Solar cells could soon be produced more cheaply using nanoparticle "inks" that allow them to be printed like newspaper or painted onto the sides of buildings or rooftops to absorb electricity-producing sunlight.
Nanotechnology / Nanomaterials
Aug 24, 2009 |
4.2 / 5 (32) |
12
Bringing solar power to the masses
On a 104-degree Friday in July when sunlight bathed The University of Arizona campus, doctoral student Dio Placencia sat before a noisy vacuum chamber in the Chemical Sciences Building trying to advance the renewable energy ...
Technology / Energy & Green Tech
Aug 05, 2009 |
4 / 5 (11) |
2
Energy-saving method checks refrigerant level in air conditioners
(PhysOrg.com) -- Engineers have developed a technique that saves energy and servicing costs by indicating when air conditioners are low on refrigerant, preventing the units from working overtime.
Jun 22, 2009 |
2.5 / 5 (2) |
3
Drinking water from air humidity
Cracks permeate the dried-out desert ground, the landscape bears testimony to the lack of water. But even here, where there are no lakes, rivers or groundwater, considerable quantities of water are stored ...
Jun 05, 2009 |
4.9 / 5 (16) |
12
The day the universe froze: New dark energy model includes cosmological phase transition
Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.
May 08, 2009 |
3.9 / 5 (23) |
16
