Abstract

"Abstract"

T.Kuhn's theory in science history says that the science could not develop gradually and by accrual but developing by sciences revolutions which "Paradigm" takes other place.
As result of that and changing of the "Paradigm" into large shape from used understands and on initial principles and used approaches and even on sciences techniques which used in scientific research.
T.Kuhn's says that the scientist find that after each scientific revolution a new
world different than previous when they seen before by "Paradigm".
The scientific revolutions happens when appears abnormal externals which not accept any explanation depends on the used "Paradigm" in that time, so, the scientists tries to beseeming between "Paradigm" and abnormal externals and when these tries fail, will happen the scientific cerise when scientists tries to review the exponents and main exponents and as result of that happens the scientific revolution.