News tagged with vacuum energy
The day the universe froze: New dark energy model includes cosmological phase transition
May 08, 2009 |
3.9 / 5 (23) |
16
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.
Tackling the big questions -- approaching a revolution in our understanding of gravity
Nov 05, 2008 |
4 / 5 (46) |
13
(PhysOrg.com) -- The way galaxies move through the cosmos has recently begun to baffle scientists. Even when the gravitational theories of Newton and Einstein are taken into account, the universe is expanding and galaxies ...
Search results for vacuum energy
An easy way to see the world's thinnest material
Nanotechnology / Nanomaterials
Dec 23, 2009 |
4.8 / 5 (12) |
1
It's been used to dye the Chicago River green on St. Patrick's Day. It's been used to find latent blood stains at crime scenes. And now researchers at Northwestern University have used it to examine the thinnest material ...
Accelerators and Light Sources of Tomorrow (Part 2: Accelerating with Light)
Dec 22, 2009 |
4.9 / 5 (8) |
0
Accelerators are far from achieving the highest energies their builders aspire to, but size and cost may limit the kinds of facilities funding agencies can support. In the future, new kinds of machines will ...
Accelerators and Light Sources of Tomorrow (Part 1: From Linacs to Lasers)
Dec 22, 2009 |
4.7 / 5 (6) |
2
From their humble beginnings as offshoots of the ordinary electric light bulb, particle accelerators have evolved in surprising directions. Among the most productive and promising developments have been light ...
Digital Quantum Battery Could Boost Energy Density Tenfold
Dec 22, 2009 |
4.9 / 5 (43) |
15
(PhysOrg.com) -- Physicists theorize that quantum phenomena could provide a major boost to batteries, with the potential to increase energy density up to 10 times that of lithium ion batteries. According to ...
Micromachined piezoelectric harvester drives fully autonomous wireless sensor
Dec 15, 2009 |
5 / 5 (11) |
1
For the first time, a piezoelectric harvesting device fabricated by MEMS technology generates a record of 85μW electrical power from vibrations. A wafer level packaging method was developed for robustness. ...
Scientists Create Material More Insulating than the Vacuum
Dec 10, 2009 |
4.6 / 5 (58) |
27
(PhysOrg.com) -- With its complete lack of atoms, a vacuum is often considered to be the best known insulator. For this reason, vacuums are regularly used to reduce heat transfer, such as in the lining of ...
Metamaterials could reduce friction in nanomachines
Nanotechnology / Nanomaterials
Dec 07, 2009 |
5 / 5 (4) |
2
(PhysOrg.com) -- Nanoscale machines expected to have wide application in industry, energy, medicine and other fields may someday operate far more efficiently thanks to important theoretical discoveries concerning the manipulation ...
A (nano-) window that washes itself?
Nanotechnology / Nanomaterials
Dec 03, 2009 |
4.5 / 5 (8) |
9
A coating on windows or solar panels that repels grime and dirt? Expanded battery storage capacities for the next electric car? New Tel Aviv University research, just published in Nature Nanotechnology, detail ...
Nanotech in Space: Experiment To Weather the Trials of Orbit
Nanotechnology / Nanomaterials
Nov 24, 2009 |
4 / 5 (2) |
0
Novel nanomaterials developed at Rensselaer were sent into orbit on Nov. 16 aboard Space Shuttle Atlantis.
Crashing the size barrier
Nov 18, 2009 |
4.5 / 5 (15) |
6
Like surfers on monster waves, electrons can ride waves of plasma to very high energies in a very short distance. Scientists have proven that plasma acceleration works. Now they're developing it as a way to ...
List of search results for vacuum energy
