Difference between revisions of "Chapter 32: 315-326"

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in the design of the Remontoire
In mechanical horology, a remontoire, (from the French remonter, meaning 'to wind') is a small secondary source of power, a weight or spring, which runs the timekeeping mechanism and is itself periodically rewound by the timepiece's main power source, such as a mainspring. In precision clocks and watches it is often used to place the source of power closer to the escapement thereby increasing the accuracy by evening out variations in drive force caused by unevenness of the friction in the geartrain. In spring-driven precision clocks a gravity remontoire is often used to replace the uneven force delivered by the mainspring running down by the more constant force of gravity acting on a weight. In turret clocks it serves to separate the large forces needed to drive the hands from the modest forces needed to drive the escapement which keeps the pendulum swinging. A remontoir should not be confused with a maintaining power spring, which is used only to keep the timepiece going while it is being wound. From WIKI

Prandium gratis non est
There is no such thing as a free lunch

"Power may be borrow'd, as needed, against repayment dates deferrable indefinitely."
The watch runs on some major credit

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Compound Interest
Compound interest was once regarded as the worst kind of usury, and was severely condemned by Roman law, as well as the common laws of many other countries. Richard Witt's book Arithmeticall Questions, published in 1613, was a landmark in the history of compound interest. It was wholly devoted to the subject (previously called anatocism), whereas previous writers had usually treated compound interest briefly in just one chapter in a mathematical textbook. Witt's book gave tables based on 10% (the then maximum rate of interest allowable on loans) and on other rates for different purposes, such as the valuation of property leases. Witt was a London mathematical practitioner and his book is notable for its clarity of expression, depth of insight and accuracy of calculation, with 124 worked examples. From WIKI

Mechanics, or, The Doctrine of Motion
Link to Emerson's book HERE

Black Head
Black Head is a headland on the south coast of England, to the east of Weymouth in Dorset. It lies on the Jurassic Coast, a UNESCO World Heritage landscape known for its geology. Fossils can be found in the area. From WIKI

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Conservation of Energy
The law of conservation of energy states that the total amount of energy in a closed system remains constant. A consequence of this law is that energy cannot be created nor destroyed. The only thing that can happen with energy in a closed system is that it can change form, for instance kinetic energy can become thermal energy... Another consequence of this law is that perpetual motion machines can only work perpetually if they deliver no energy to their surroundings. If such machines produce more energy than is put into them, they must lose mass and thus eventually disappear over perpetual time, and are therefore impossible. From WIKI

Principia
The Philosophiæ Naturalis Principia Mathematica, Latin for "Mathematical Principles of Natural Philosophy", often Principia or Principia Mathematica for short, is a work in three books by Isaac Newton, first published on 5 July 1687. Newton also published two further editions, the second in 1713, and the third in 1726. The Principia contains the statement of Newton's laws of motion forming the foundation of classical mechanics, as well as his law of universal gravitation and a derivation of Kepler's laws for the motion of the planets (which were first obtained empirically). The Principia is "justly regarded as one of the most important works in the history of science". From WIKI

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