Translations of Prof. Allais's Notes to the French Academy of Sciences


English: The translations of Prof. Allais's ten Notes to the French Academy of Sciences will appear here in downloadable form, as and when I make them one by one; but it hasn't all happened yet. These notes are the real thing - straight from the horse's mouth - but be warned: they are concise scientific papers, and make no concessions to the casual reader. They give a clear and factual account of how Prof. Allais viewed the progress of his researches at the time - at least, for official presentation - without any later conclusions.

Here are the links with notes as to current availability. As I progress with the translation of each successive Note, its link will come to life. But don't hold your breath... I do have a few other things to do! Watch this URL!

The very valuable photos included with these Notes are already available here.


At the moment FIVE of these ten translations have been done. There remain a few minor translation queries; I solicit help from those more skilled in technical French than myself...

By the way, the caveat about printing on paper sizes other than A4, at the bottom of the page bearing the NASA report, applies to these Notes as well, although not so strongly. Basically, if you are printing them on "letter size" paper as used in the USA, you have to be a bit careful about the pagination. When time permits, I will produce .pdf versions of these documents.


Note of 4 November 1957

Observation of the Movements of the Paraconical Pendulum

Available, but not polished.


Note of 13 November 1957

Harmonic Analysis of the Movements of the Paraconical Pendulum

Available, but not polished.


Note of 18 November 1957

Movements of the Paraconical Pendulum and the Total Solar Eclipse of 30 June 1954

Available, but not polished.


Note of 25 November 1957

Theory of the Paraconical Pendulum and the Luni-Solar Influence

Available, but not polished.


Note of 3 November 1958

New Experiments with a Paraconical Pendulum with Isotropic Support

Not yet translated; so the link is broken.


Note of 22 December 1958

Periodic Structure of the Movements of the Paraconical Pendulum with Anisotropic Support at Bougival and Saint-Germain in July 1958

Not yet translated; so the link is broken.


Note of 9 February 1959

Experimental Determination of the Influence of Anisotropy of the Support upon the Movement of the Paraconical Pendulum

Not yet translated; so the link is broken.


Note of 19 January 1959

Experimental Determination of the Influence of Inclination of the Bearing Surface upon the Movement of the Paraconical Pendulum with Anisotropic Support

Translated at last!


Note of 13 May 1957

Test of Periodicity - Generalization of the Schuster Test in the Case of Autocorrelated Temporal Series

Not yet translated; so the link is broken.


Note of 4 December 1957

Application of the Generalized Schuster Test to Harmonic Analysis of the Azimuths of the Paraconical Pendulum

Not yet translated; so the link is broken.


French: If you want the original French versions of these Notes, here are links to the .pdf versions:

Click Here for the first volume of the Notes.

Click Here for the second volume of the Notes.



If you want these notes page by page, in image form, here you are. Each of the pages is 200K to 300K. You can get them by clicking each of the following links in succession, and then printing or storing the results. They print very well.



The first volume:


Volume 1, page 1

Volume 1, page 2

Volume 1, page 3

Volume 1, page 4

Volume 1, page 5

Volume 1, page 6

Volume 1, page 7

Volume 1, page 8

Volume 1, page 9

Volume 1, page 10

Volume 1, page 11

Volume 1, page 12

Volume 1, page 13

Volume 1, page 14

Volume 1, page 15

Volume 1, page 16

Volume 1, page 17

Volume 1, page 18

Volume 1, page 19

Volume 1, page 20

Volume 1, page 21

Volume 1, page 22

Volume 1, page 23

Volume 1, page 24

Volume 1, page 25


As mentioned above, some very valuable photos were also included in this Volume 1; you can get them by clicking here.



The second volume:


Volume 2, page 1

Volume 2, page 2

Volume 2, page 3

Volume 2, page 4

Volume 2, page 5

Volume 2, page 6

Volume 2, page 7

Volume 2, page 8

Volume 2, page 9

Volume 2, page 10

Volume 2, page 11

Volume 2, page 12

Volume 2, page 13

Volume 2, page 14

Volume 2, page 15

Volume 2, page 16

Volume 2, page 17




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