Excerpt from The First Three Sections of Newton's Principia<br/><br/>This is also confirmed by experiments in tubes exhausted of air, in which a feather, a lump of lead, of gold, or of any other substance, are all found to occupy equal times in falling through equal spaces. The motion produced by gravity in every part of each body being thus seen to be the same, it follows that the whole quantity of motion which gravity produces or tends to produce in each  in other words, the weight is proportional to the quantity of matter. Note 2. The quantity of matter, or mass, of a body, is denoted by the symbol M. Note 3. The density of a body may be defined as the quan tity of matter it contains in a unit of volume.
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Paperback. Condition: New. Print on Demand. This book, first published in 1687, is a seminal work in the history of science and mathematics that laid the foundations of classical mechanics. It presents Newton's three laws of motion and universal gravitation, which have revolutionized our understanding of the universe and how it works. The book is written in a mathematical style, and it requires a solid understanding of algebra and geometry for a thorough comprehension. Newton's work is notable for its rigor and depth, and it continues to be essential reading for students of physics and astronomy. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9780282304805_0
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780282304805
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780282304805
Quantity: 15 available