Sentences with phrase «of vacuum energy»

The standard ideas of the 1980s about the shape and history of the Universe have now been abandoned — and cosmologists are now taking seriously the possibility that the Universe is pervaded by some sort of vacuum energy, whose origin is not at all understood.»

16 Current theories suggest that the universe was created out of a state of vacuum energy, that is, nothing.

The most precise calculation of the lifetime of our universe finds that a bubble of vacuum energy made by the Higgs boson could envelop us all in 10139 years

Most physicists suspect that dark energy is a form of vacuum energy known as the «cosmological constant» because its strength never varies.

Think of it as a kind of vacuum energy permeating the fabric of spacetime that defies measure.

(It's called a constant because any part of space should possess the same amount of vacuum energy.)

Think of it as a kind of vacuum energy permeating the fabric of spacetime that defies measure.»

Not exact matches

In contrast to Ong's product - based approach, Roosegaarde's work has mainly taken the form of large - scale installations, among them a fluorescent bike path that glows like Van Gogh's night skies, giant kites that can supply up to 200 households with green energy, and «the world's largest vacuum cleaner» to suck up air pollution in public spaces.

It is believed that vacuum fluctuations may have a connection with «dark energy» which drives the accelerated expansion of the universe.

In the olden days of our own infancy, our parents may have run a vacuum or put us on the dryer, but living in energy - conscious Berkeley, you can't do that stuff all night long.

The news vacuum leaves plenty of people with plenty of time and energy to focus on you.

Instead the theory predicted a virtually countless number of vacuum states, with nearly any amount of repulsive energy you could imagine.

Many astrophysicists wager that dark energy is inherent to the empty vacuum of space, comprising the universe's bulk by virtue of being near - ubiquitous.

The possibilities being discussed for dark energy range from quantum vacuum energy to the influence of the unseen extra dimensions predicted by string theory.

They're called virtual particles, and the energy associated with the background hum of their constant appearance and disappearance became the way in which we understand the source of repulsive vacuum energy.

It turns out that most of the stuff in the universe is in the form of some energy in the vacuum that has an odd repulsive property.

Strangely enough, the simplest example of energy with repulsive gravity involves Einstein's nemesis, quantum mechanics, which holds that even a perfect vacuum is not empty.

But only in the last 10 years has the vacuum taken center stage as a font of confounding mysteries like the nature of dark energy and matter; only recently has the void turned into a tantalizing beacon for cranks.

A quick Internet search for the words free energy and vacuum turns up pages and pages of schemes for tapping the vacuum's energy.

The result is a minuscule amount of energy for every cubic meter of vacuum.

«We demonstrate that the simplest small mixing, related to the ratios of the scale at which electroweak physics operates, and a possible Grand Unified Scale, produces a possible contribution to the vacuum energy today of precisely the correct order of magnitude to account for the observed dark energy,» Krauss explained.

For normal physicists,» he adds with a laugh, «the definition of the vacuum is that it's the lowest - energy situation possible — it has less energy than anything else.»

MK: Negative energy is energy below the vacuum state, or the state of motionless nothing.

If some clever engineer were ever to extract energy from the vacuum, it could set off a chain reaction that would spread at the speed of light and destroy the universe.

Such dark energy might arise from the tangle of fields that fill the vacuum on the subatomic level.

This suggests the vacuum of space - time must have an inherent energy that is repulsing gravity.

It's made up of a little bit of ordinary matter, a lot of some exotic «dark matter» of unknown identity, and even more of a mysterious energy permeating the vacuum of space, exerting gravitational repulsion.

So, armed with improved equipment, University of California, Davis researchers subjected carbon dioxide to high - energy ultraviolet light particles in a vacuum.

Most of them are produced in vacuum chambers that use tons of energy to deposit thin layers of semiconductor materials onto a flawless wafer.

It begins with the spontaneous production of a particle and its anti-particle from the energy of the vacuum of space - time.

Conventional sputtering processes involve bombarding a solid object such as an ingot of titanium, referred to as the target, with energy - rich ions in a vacuum chamber.

«We found that we could eliminate the need for operating at a partial vacuum, which should cut nearly all the losses of magnesium and significantly reduce the energy demands,» says Cameron.

Such one - step oxygen formation could be happening now as carbon dioxide increases in the region of the upper atmosphere, where high energy vacuum ultraviolet light from the Sun hits Earth or other planets.

Now UC Davis graduate student Zhou Lu, working with professors in the Departments of Chemistry and of Earth and Planetary Sciences, has shown that oxygen can be formed in one step by using a high energy vacuum ultraviolet laser to excite carbon dioxide.

When the idea was first proposed mathematically in 1994 it required a vast amount of negative vacuum energy which made the idea seem impossible.

The presence of this toroidal ring of negative vacuum energy is what's required from the math and physics to be able to use the warp trick.

Our experiments will narrow the uncertainty down to these parameters of dark energy, but the closer [it] gets to looking like vacuum energy, the less [we'll] be able to distinguish between vacuum energy and something that just looks like vacuum energy.

[He's] absolutely right, of course, and we may be lucky, and I hope we are lucky; what Alan said is, I want to emphasize something about the negative features of what Alan said, [which] is that if the vacuum energy is dark energy, we won't be able to prove it is dark energy.

You would have an initial velocity as you set off, and then when you turn on the ring of negative vacuum energy it augments your velocity.

Dodelson: Again referring to this dark energy today, there are two possibilities that lead to optimistic branches and one is that dark energy today may not be vacuum energy, it may be something completely different; and a good piece of evidence for that is that inflation itself require [s] dark energy, so it kind of make sense to think, [«Well, we had some early [epoch] of dark energy which is something [we're trying to] figure out, maybe [today] there is also [a] new type of dark energy we are trying to figure out and it is not vacuum energy, so that would lead to a less pessimistic future.

The aim of firing this massive bank of laser beams would be to either heat a chamber sufficiently high — about 1029 degrees Kelvin — to create a false vacuum inside or compress a pair of spherical plates to within the Planck distance of each other, creating negative energy via the Casimir effect.

The Big Bang, which released a tremendous amount of energy, may have left behind all manner of exotic entities of physics, such as cosmic strings, false vacuums, or negative matter or energy.

JS: You need quite a lot of energy if you are going to produce these geysers, and water boiling off into a vacuum is a good way to do that.

As Boyd recalls, he then remembered that Robert Millikan, a Nobel Prize - winning physicist and the head of Caltech from 1921 to 1945, also had to contend with removing copper oxide when he performed his famous 1916 experiment to measure Planck's constant, which is important for calculating the amount of energy a single particle of light, or photon, Boyd wondered if he, like Millikan, could devise a method for cleaning his copper while it was under vacuum conditions.

This is within the range of vacuum - UV light — so named because while light of that energy can propagate in a vacuum, it is quickly absorbed by oxygen in the air.

This unique approach, developed by Dr Gavin Bell and Dr Yorck Ramachers from Warwick's Department of Physics, uses gas — rather than vacuum — to transport electrical energy,

The vast majority of universes that burst into being in this way are thick with vacuum energy; they either expand or collapse so quickly that life can not arise in them.

The researchers believe that the electric field in the vacuum tube somehow altered the energy state of the vacuum inside the cathode - ray tube in the nearby computer monitor.

Quantum mechanics tells us that the vacuum of space - time is teeming with random quantum fluctuations, which create waves of energy.

(Twenty - seven kilometers of tunnel underground Designed with mind to send protons around A circle that crosses through Switzerland and France Sixty nations contribute to scientific advance Two beams of protons swing round, through the ring they ride»Til in the hearts of the detectors, they're made to collide And all that energy packed in such a tiny bit of room Becomes mass, particles created from the vacuum And then...)