Sentences with phrase «vacuum energy known»
Most physicists suspect that dark energy is a form of vacuum energy known as the «cosmological constant» because its strength never varies.
https://www.sciencenews.org/ 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.
Based on particle physics alone, if we were to naively guess what the energy density of the vacuum ought to be, you might think it was zero; and zero was sort of acceptable to us for a long time, but the quantum vacuum that physicists really know is not empty, so, zero was not really a very sensible answer anyway.
Conversely, if the vacuum energy were negative, it would cause the universe to rapidly re-collapse and there would be no time for astronomers, at least the type we know, to come into existence.
As the two mirrors move closer to each other, the longer waves will no longer fit — the result being that the total amount of energy in the vacuum between the plates will be a bit less than the amount elsewhere in the vacuum.
No one knows exactly what's doing the pulling, but the contracting force could exist in empty space because the vacuum is full of energy and other intangibles.
Within this spectrum [and this spectrum includes all known energy which can radiated thru the vacuum of space] is what is called the visible and infrared part of this spectrum.
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.
Okay, I know they are traveling extremely fast, circling the earth in 90 minutes, yet for some reason, I always thought it didn't take much energy to move things once they're in the vacuum of
One believes Dr. Curry must be familiar with the top - of - the - atmosphere radiation methods and conclusions, and would know that the energy flow of the Earth as a whole is easier to calculate when treating the boundary as the edge of the vacuum of space.