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Long before Galileo and Newton used superior mathematics to study a fundamental natural force, Leonardo calculated the gravitational constant with surprising accuracy.

Notes and sketches by Leonardo Da Vinci show he understood gravity long before Newton, according to a new study.

Da Vinci fiddled with gravity as a type of acceleration and got close to calculating the gravitational constant.

Pencil sketches made by Leonardo da Vinci in the early 1500s suggest that he discovered the idea of gravity long before English mathematician Isaac Newton. He considered gravity was a form of acceleration.

Sketches found inside Leonardo da Vincis sketchbooks, show that he had already grasped the essence of Einstein’s 1907 ‘Equivalence Principle’ centuries before the physicist.

Leonardo da Vinci's understanding of gravity, while not entirely accurate, was ahead of its time and was 97% accurate.

Sketches made in the early 1500s by Leonardo da Vinci show experiments to explain gravity - and with 97% accuracy. This means the famed Italian understood the concept before Isaac Newton.