What's In You learned earlier how all matter in the universe is made from tiny building
blocks called atoms. All modern scientists accept the concept of the atom, but
when the concept of the atom was first proposed about 2,500 years ago, ancient
philosophers laughed at and opposed the idea. It has always been difficult to
convince people about the existence of things that are too small to be seen. We
will spend some time considering the evidence (observations) that helped
convince scientists of the existence of atoms.
Do you have any idea how the different elements on the periodic table were
formed, known and identified? Let's have a short review.
There is what we call Big Bang Theory that has some key stages: Singularity,
Inflation, Nucleosynthesis and Recombination: Let us differentiate them.
Singularity is a one-dimensional point which contains a huge mass in an
infinitely small space, where density and gravity become infinite and space-time
curves infinitely, and where the laws of physics as we know them cease to
operate. The basic homogeneity in distribution of matter in the universe was
established as a consequence of the first phase of inflacion. Nucleosynthesis
was the nuclear fusion and the formation of new nuclei actions in the early
stages of development of the universe. Recombination - the formation of the
capture of free electrons by the cations in a plasma.​