Internal Music is considered as a basis to form music melody that sends rapture and
ecstasy within ones selves since it occurs directly on ears ( hearing) and since it tightens the
meaning to make it penetrating into Heart. It is rhythmic organization occurred inside the text
due to movements of internal sounds since rhythm heavily depends on language and
pronunciation. Repetition adds music melody to the poetic text since it increases music in
poetry. The sounds that reoccurred either be letters or words are no more than confirmation.
Thus , repetition is artistic phenomena most poets resorted to as to diverse his subjects and
metaphors he depicts in his poetry. The repetition has achieved artistic aesthetics , meaning
strengthening and poetic indication as well. The poets , through repetition, showed their
sufferings by consistently insisting on repetition of some words that expressed their agonies
and panics. This art has included a huge area of poetry volumes ,specially Abdul kareem Al-
Qaisi and Yusif the Third , whose poetry appeared reoccurrence and repetition as an artistic
phenomena.
In order to serve the field of knowledge in the field of design and analysis of experiments by adopting formulas and methods that are easy and simple in arithmetic work, especially in experiments that require many calculations for squares, including tests of type