| Q7
At 0.1ms the temperature of the particle soup has dropped to 10 billion
degrees. At this temperature creation of particles like protons has
ceased and so no new particles of the size of a hadron are formed.
But the anti hadrons are still present so annihilation still occurs.
This forms energy that was originally used to create them. So energy
is being created from matter, but little matter is created from energy,
so the universe will become dominated by energy.
Q8 After three minutes
the strong interaction is powerful enough to overcome the affects of temperature
and bind together hadrons, to form nucleuses of simple atoms like hydrogen
and helium.
Q9 After 300,000 years
the universe had dropped to a temperature of about 3000K. At these
temperatures, the electromagnetic force is strong enough to overcome the
affect of heat and allows electrons to orbit the basic nucleuses of hydrogen
and helium.
Q10 Soon ripples in the
particle soup were formed. These ripples would have a slightly higher
temperature than the surrounding area and so would have a different wavelength
of emitted light. This was detected by the COBI satellite in the
early 90's. The background temperature was now only 2.735K, and lies
in the microwave area of the EM spectrum. The black body curve is
shown below. |
