Decoupling
(a) Separation of classes of particles from regular interaction with one another, as in the decoupling of photons from particles of matter that produced the cosmic background radiation.
Decoupling Epoch - The time about a million years after the expansion of the universe began when the universe became transparent and light could, for the first time, travel great distances before being absorbed or scattered.
Photon Decoupling
The release of photons from constant collisions with massive particles as the Universe expanded and its matter density diminished. (See Decoupling) [F88]
Photon Detectors ...
decoupling Event in the early universe when atoms first formed, and after which photons could propagate freely through space.
6. Decoupling refers to interactions between matter and antimatter. (Hint)
7. The present-day microwave background radiation originated just before the period of decoupling. (Hint) ...
Recombination (Decoupling)
3000 K
Matter and radiation seperate
End of radiation domination, start of matter domination of the Universe ...
At the time of weak decoupling, about 1 second after the Big Bang, the neutrinos and the photon-electron-positron plasma had the same temperature, which I will call Tn.
Atomic hydrogen formed from the decoupling of electrons about 300,000 years after the Big Bang. It is the prime fuel for nucleosynthesis in stars. Its fusion into helium is the source of energy for main sequence stars such as our Sun.
The cosmic microwave background is radiation left over from decoupling, when atoms first formed, and the radiation produced in the big bang stopped Thomson scattering from charged ions.
The epoch of recombination may also be called the epoch of decoupling. As long as these components are linked, the time t and temperature T are related by t = 3c² / (32 p G a T4)1/2, a relativistic result derived via radiation density.
There is a trick known as "decoupling", in which the test is performed in a large underground cavity, that can reduce the seismic signal, particularly if the rock walls of the cavity are soft.
This measurement is made by using the location of the first acoustic peak in the microwave background power spectrum to determine the size of the decoupling surface (size of universe at the time of recombination).
This heralded the decoupling of matter and radiation and the point at which the cosmic microwave background as we see it today was created.
So if one is able (in a decoupling limit) to describe the gravitational system as two separate regions - one (the bulk) far away from the source, ...
Each wheel is powered by a separate electric motor which has a sealed drive to prevent problems of lunar dust. Even if two wheel motors fail, the vehicle can continue to be driven by simply decoupling the failed motor to free the wheel.
Release Compact Source Catalogue is the first step towards Planck's key goal of tracing the formation of the very first structures in the Universe that are imprinted on the Cosmic Microwave Background (CMB) radiation, which marks the decoupling of ...
would thin out sufficiently to permit photons to be set free from the attraction of the other matter, and travel through the constantly expanding reaches of space. The process that produced this blast of free energy is known as photon decoupling.
The thermal barrier significantly reduces the density requirements in the plug and lowers the overall power required to sustain the solenoidal plugging by thermally decoupling central cell electrons from the end plugs.
 See also: Light, Universe, Time, Background, Spectrum
  
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