Sentences with phrase «constant vacuum energy»

Such a field could vary in strength over time and throw off the calculations based on a constant vacuum energy.

Not exact matches

To understand the answer to your question you need to know a little something about the cosmological constant, vacuum energy and virtual particles.

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.

But Riess pointed out that the evidence is growing stronger and stronger that the vacuum energy is just the cosmological constant.

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

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 might have practical implications in quantum computing, as ours is a world of constant fluctuation — even a vacuum is alive with vibrations of energy.

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

However, the energy density of the cosmological constant is many orders of magnitude weaker than what would be predicted based on this «vacuum energy» and it is hard to reconcile the discrepancy.

And empty space, as you know it, is not really empty, here is a quote about it: The physical interpretation of the cosmological constant as vacuum energy density is supported by the existence of the «zero point» energy predicted by quantum mechanics.

I believe that if in the vacuum of space you place a blackbody object with (a) a constant (i.e., unchanging energy per unit time) internal thermal energy source, and (b) internal / surface thermal conduction properties such that independent of how energy enters the blackbody, the surface temperature of the blackbody is everywhere the same and you place that object in cold space (no background thermal radiation of any kind), eventually the object will come to a steady state condition — i.e., the object will eventually radiate energy to space at a rate equal to the rate of energy produced by the internal energy source.