Horologium oscillatorium: sive, De motu pendulorum ad horologia aptato By Christiaan Huygens. About this book. Terms of Service · Plain text · PDF. THREE great works laid the foundation of modern mechanics: Galilei’s “ Discourses on Two New Sciences”(), Huygens’s “Horo–logium Oscillatorium ”(). Horologium Oscillatorium: Christiaan Huygens: publication in of his Horologium Oscillatorium. That brilliant work contained a theory on the mathematics.

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Horologium Oscillatorium – Wikipedia

The evolutes and lengths of curves. This clock was presumably used to conduct experments on circular motion, and on the misnamed centrifugal force in particular, for which a number of theorems are set out without proof. He uses these three rules to re-derive Galileo’s original study of falling bodies, based on clearer logical framework.

The later theorems return to the clock, which is now standardised, and a use in determining a standard of length, as well as the acceleration of gravity, are investigated. However, if you are a student, teacher, or just someone with an interest, you can copy part or all of the work for legitimate personal or educational use. You will find many familiar propositions here in an unfamiliar guise. By using this site, you agree to the Terms of Use and Privacy Policy.

Horologium Oscillatorium | work by Huygens |

The construction of another kind of horolgoium, and the enunciation of some theorems on centrifugal force. In the process, Huygens obtained solutions to dynamical problems such as the period of an oscillating pendulum as well as a compound pendulumcenter of oscillation and horklogium interchangeability with the pivot point, and the concept of moment of inertia.

Osci,latorium Measurement of Time and of Longitude at Sea”. This article about a physics -related book is a stub. Concerning the centre of oscillation.


This work inspired a generation of physicists and mathematicians, including Newton, Johanne Bernoulli, and Euler, for it reaches far beyond the working of pendulum clocks, and it still deserves a place in the historical presentation of the subject as presented today in elementary physics text books.

The motion of a body falling along a cycloid. Archived from the original on Some results are only quoted, unfortunately, but this work gives a real insight into the state of mathematics in the middle of the 17th century.

This work also has the advantage horolotium accessibility, and comes to you free of charge. Part IIA relates to a careful geometrical examination of the speed and distance travelled by a body horilogium from rest in successive time intervals both vertically and down inclined planes; before embarking on motion down the cycloid curve, which is set out in part IIB.

Huygens makes use of traditional Greek geometry and leans on Galileo in establishing the tautochronic behaviour of the cycloid, which is rather heavy going with such limited mathematical tools.

Blackwell, which I discovered only after most of my own translation; this admirable translation does not however include mathematical notes, apart from an introduction by H. Part III is a rather wonderful essay on the properties of the Evolutes of Curves and their lengths, starting with the cycloid, the parabola, and others derived from conic sections and higher order curves.

They are essentially the law of inertia and the law of composition of “motion”.

oscillatoruim Scientific, Historical, Philosophical, and Educational Perspectives. For example, most of the intuitive ideas about centripetal forces are presented here in Part V. Most of the first part is concerned with the making and testing of such clocks.

Horologium oscillatorium: sive, De motu pendulorum ad horologia aptato demostrationes geometricae

One presumes that Huygens made use of such tools in his derivation, which remain hidden. The book is divided into five parts, where the first part contains the descriptions of clock designs, while the rest of the book is devoted to the analysis of pendulum motion and a theory of curves.


Mahoney can be found on the web, which provides the analysis for the final theorems. It is the first time the quantity that Euler later called the moment of inertia was investigated. Oscilaltorium book is also known for its strangely worded dedication to Louis XIV. Part V shows a different kind of clock, where the motion of the pendulum is circular, and the string unwinds from the evolute of a parabola.

The derivations of propositions in this part is based on a single assumption: If nothing else, it demonstrates the beauty of the analytical methods that were soon to appear.

This work deserves to be read by all physicists and mathematicians with an interest in physics. This page was last edited on 9 Octoberat I reserve the right to publish this translated work in book or e-book form.

Retrieved from ” https: It must be stressed that this present work is my own independent translation, in which I have gone through most of the relevant mathematics, and the Huygens scholar will of course be aware of Blackwell’s work as well as French and German translation.

You can help Wikipedia by expanding it. Huygens is seen as the outstanding physicist of the pre-Newton age who pointed the way forwards. Truly, a wonderful piece of work:

Last modified: February 17, 2020