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أول من قال بالجاذبية الأرضية
The First to Speak of Earth's Gravity
Sheikh Salih Aal ash-Sheikh
17 views2h ago
Lecture
Arabic → English
Sheikh Salih Aal ash-Sheikh traces the first recorded mention of Earth's gravitational force to Abu al-Qasim ibn Khordadbeh (d. 280 AH) in his book Al-Masalik wal-Mamalik — centuries before Newton.
Transcript 12 lines
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The first to speak of Earth's gravity.
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Abu al-Qasim Ubayd Allah ibn Abd Allah ibn Khordadbeh said.
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He died in 280 AH. In his book Al-Masalik wal-Mamalik, page 4.
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Description of the Earth. He died in 280.
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The Earth is spherical, like a ball, set in the sphere like the yolk in an egg.
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And the air around the Earth draws it from all sides toward the sphere.
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Creatures on Earth are made so the air draws what is light in their bodies.
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The Earth, in turn, draws what is heavy in their bodies.
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For the Earth is like the stone that draws iron, meaning a magnet.
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So to say that Newton was the first to speak of gravity is incorrect.
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Muslims were the first to discover Earth's gravity.
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But Newton formulated the three well-known laws of gravity.