Ibn Sina (980-1037), who was distinguished in various fields of knowledge and skills such as philosophy, mathematics, astronomy, physics, chemistry, medicine and music, was interested in the definitions of mathematical terms in the field of mathematics and making sensitive observations in the field of astronomy. He did not give credit to astrology and alchemy, investigated whether the Transformation Theory was true or not with the experiments he made and came to the conclusion that it was not true. According to Ibn Sina, each element has only its own unique qualities, and therefore it is impossible to obtain more valuable metals such as gold and silver from more worthless metals.
Ibn Sina was also interested in mechanics and criticized Aristotle's understanding of motion in some ways; as it is known, Aristotle says that when the contact between the force that moves the body and the body disappears, it is the medium, that is, the air, that allows the body to maintain its movement, and the air will not be compatible with each other, one of which is to resist the body and the other is to transport the body. i.Sina Decried the mechanics and criticized Aristotle's understanding of motion in some ways; as it is known, Aristotle says that when the contact between the force that moves the body and the body disappears, it is the medium, that is, the air.