The scientific miracle of Quran
The scientific miracles in Qur`an tell that Qur'an is the truth from God, which the experimental Science proved many facts mentioned on it; things that couldn't have been realized with the available human instruments at the time of Muhammad (PBUH).
Qur'an is the holey book of Muslims which God revealed to his Prophet Muhammad. There are many facts about the universe and its Phenomena that the gained science could not access until centuries after the revealing of Qur'an.
Qur'an came with a lot of signals for generations to come that believe in scientific methods; miracles starting from historical detail of the Prophets and the previous nations; Arabs did not know anything about this history except the Pontiffs and the monks who many of them left their religion at that time and they followed the religion of Muhammad; Islam.
As for the new scientific discoveries and breakthroughs which Qur'an tackled a thousand and four hundred years ago , we can observe the following examples:
The researchers discovered that seas water do not get mixed in spite of their meeting because of existence of barrier as it is at Strait of Gibraltar .
Qur'an has confirmed this Phenomenon with Allah saying "He has let free the two bodies of flowing water, meeting together, between them is a barrier which they do not transgress" .
Astronomers proved a scientific fact that the earth is unstitched from heavens; Qur'an showed this Phenomenon when Allah said
" Have the unbelievers not seen that the heavens and the earth were sewn up as one (solid) mass, then we unstitched them" .
After man could reach to the sky by new transportation instruments; he knew that when he rose high in the atmosphere the Oxygen and the atmospheric pressure became less , that causes some pressure on the chests and the process of breathing that becomes excessively tight; that was cleared in the verse " Whomsoever Allah desires to guide, He expands his chest to Islam (submission). Whomsoever He desires to lead astray, He makes his chest narrow, tight, as though he were climbing to heaven".