The Advance of Science in the Last Half-Century
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In our eReader you can find the full English version of the book. Read The Advance of Science in the Last Half-Century Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Advance of Science in the Last Half-Century
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Hence thephrase _energy of position_, which is frequently used as equivalent topotential energy. If a stone is picked up and held, say, six feetabove the ground, it has _potential energy_, because, if let go, itwill immediately begin to move towards the earth; and this energy maybe said to be _energy of position_, because it depends upon therelative position of the earth and the stone. The stone is solicitedto move but cannot, so long as the muscular strength of the holderprevents the solicitat...ion from taking effect. The stone, therefore, has potential energy, which becomes kinetic if it is let go, and theamount of that kinetic energy which will be developed before itstrikes the earth depends on its position--on the fact that it is, say, six feet off the earth, neither more nor less. Moreover, it canbe proved that the raiser of the stone had to exert as much energy inorder to place it in its position, as it will develop in falling. Hence the energy which was exerted, and apparently exhausted, inraising the stone, is potentially in the stone, in its raisedposition, and will manifest itself when the stone is set free.
What to read after The Advance of Science in the Last Half-Century?
You can find similar books in the "Read Also" column, or choose other free books by Huxley Thomas Henry to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Hence thephrase _energy of position_, which is frequently used as equivalent topotential energy. If a stone is picked up and held, say, six feetabove the ground, it has _potential energy_, because, if let go, itwill immediately begin to move towards the earth; and this energy maybe said to be _energy of position_, because it depends upon therelative position of the earth and the stone. The stone is solicitedto move but cannot, so long as the muscular strength of the holderprevents the solicitat...ion from taking effect. The stone, therefore, has potential energy, which becomes kinetic if it is let go, and theamount of that kinetic energy which will be developed before itstrikes the earth depends on its position--on the fact that it is, say, six feet off the earth, neither more nor less. Moreover, it canbe proved that the raiser of the stone had to exert as much energy inorder to place it in its position, as it will develop in falling. Hence the energy which was exerted, and apparently exhausted, inraising the stone, is potentially in the stone, in its raisedposition, and will manifest itself when the stone is set free.
What to read after The Advance of Science in the Last Half-Century?
You can find similar books in the "Read Also" column, or choose other free books by Huxley Thomas Henry to read onlineMoreLess
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