De la structure des vaisseaux anglais, considérée dans ses derniers perfectionnements

1833 ◽  
Vol 2 ◽  
pp. 62-63
Keyword(s):  
Royal Society ◽  
Present Communication ◽  
Naval Architecture ◽  
Ship Building ◽  
Oblique Direction ◽  
Rectangular Frame ◽  
Longitudinal Length ◽  
Frame Work ◽  
Academy Of Sciences

Being engaged in collecting materials for a work entitled “A Picture of Naval Architecture in the 18th and 19th Centuries,” the author was induced to visit this country, with a view to become acquainted with the various innovations and improvements lately introduced here in the art of ship-building; and, in the present communication, offers some remarks upon the plans proposed by Mr. Seppings, an account of which has formerly been before the Royal Society, and is printed in their Transactions for 1814. After giving an outline of the fundamental principles upon which Mr. Seppings’s improvements in naval architecture principally depend, and dwelling especially upon the diagonal pieces of timber which he employs to strengthen the usual rectangular frame-work, the author proceeds to state that similar contrivances were long ago suggested and even practised by the French ship-builders, in order to give strength to the general fabric of their vessels. Instead of making the ceiling parallel to the exterior planks, they arranged it in the oblique direction of the diagonals of the parallelograms formed by the timber and the ceiling, in the whole of that part of the ship’s sides between the orlop and limber-strake next the kelson. They then covered this ceiling with riders, as usual, and placed crosspieces between them in the direction of the second diameter of the parallelogram. This system, however, was abandoned in the French navy, on account of its expense, of its diminishing the capacity of the hold, and of the erroneous notion that the longitudinal length of the ship was diminished by the obliquity of the ceiling. In 1755, the Academy of Sciences rewarded M. Chauchot, a naval engineer, for the suggestion of employing oblique for transverse riders; and in 1772, M. Clairon des Lauriers employed diagonal strengtheners in the construction of the frigate l’Oiseau.

I. On the great strength given to ships of war by the application of diagonal braces

1818 ◽  
Vol 108 ◽  
pp. 1-8 ◽  
Keyword(s):  
Royal Society ◽  
Early Period ◽  
Naval Architecture ◽  
Great Strength ◽  
Practical Experiment ◽  
Frame Work ◽  
Naval Officers ◽  
New System

Since the time that I first suggested the principle of applying a diagonal frame-work to ships of war, which was first partially and successfully adopted in the Kent, a seventy-four gun ship, in the year 1805, my mind has been continually and anxiously turned to this important subject; and it was not until the utility of the experiment had been fully established in the opinion of most naval officers, that I ventured to present to the Royal Society, a paper on the application of this well known principle to the construction of large ships of war, but which, as far as my knowledge extends, never had before that time been so applied, either theoretically or practically, in this, or any other maritime country; and I am well assured, that no such application, or suggestion, appears in any of the Continental writers on naval architecture. I merely mention this, because it has been pretty broadly insinuated, that the idea was borrowed from the French. The propriety of a different disposition of the materials entering into the construction of a ship, has at different times, for more than a century past, been suggested by English ship-builders; and partial alterations have, in consequence, been introduced; but no one, that I am aware of, has at any time proposed the system of a diagonal trussed frame. If I have received any assistance in the progress of this new system, now universally adopted in the British navy, it was from the plans and drawings of the celebrated bridge of Schaffhausen, and from no other source. The extensive application of this principle to no less than thirty-eight sail of the line, and thirty frigates, might perhaps be conclusive as to the advantages expected to be derived from the new system; but as the Royal Society did me the honour to introduce my account of that system into their Transactions, at an early period of its adoption, I am led to hope that the result of a practical experiment, made with a view of proving the correctness of the principle, may not be deemed an improper or an uninteresting corollary to my former paper.

scholarly journals IX. An account of trigonometrical operations in the years 1821, 1822 and 1823, for determining the difference of longitude between the Royal Observatories of Paris and Greenwich

1828 ◽  
Vol 118 ◽  
pp. 153-239 ◽  
Keyword(s):  
Royal Society ◽  
Royal Academy ◽  
The Difference ◽  
Academy Of Sciences ◽  
The Church ◽  
Royal Society Of London

In the year 1790, a series of trigonometrical operations was carried on by General Roy, in co-operation with Messrs. De Cassini, Mechain, and Legendre, for the purpose of connecting the meridians of Paris and Greenwich. In England, the work commenced with a base measured on Hounslow Heath, whence triangles were carried through Hanger Hill Tower and Severndroog Castle on Shooter’s Hill, to Fairlight Down, Folkstone Turnpike, and Dover Castle on the English coast; which last stations were connected with the church of Notre Dame at Calais, and with Blancnez and Montlambert upon the coast of France. An account of these operations will be found in the Philosophical Transactions for 1790. In the year 1821, the Royal Academy of Sciences and the Board of Longitude at Paris communicated to the Royal Society of London their desire, that the operations for connecting the meridians of Paris and Greenwich should be repeated jointly by both countries, and that commissioners should be nominated by the Royal Academy of Sciences and by the Royal Society of London for that purpose. This proposal having been readily acceded to, Messrs. Arago and Matthieu were chosen on the part of the Royal Academy of Sciences, and Lieut.-Colonel (then Captain) Colby and myself were appointed by the Royal Society to co-operate with them.

scholarly journals IX. Observations upon so much of Monsieur le Monnier the younger's memoir, lately presented to the Royal Society, as relates to the communicating the electric virtue to non-electrics; by Wm. Watson, F. R. S

1746 ◽  
Vol 44 (482) ◽  
pp. 388-395
Keyword(s):  
Royal Society ◽  
Royal Academy ◽  
The World ◽  
The Many ◽  
Academy Of Sciences

The World is much obliged to Mons. le Monnier for the many Discoverics he has made of the Power of Electricity; though the Reason of my troubling you with this Paper at this time, is my differing with that Gentleman in the Conclusions which he deduces from several of the Experiments contain’d in his Memoir lately presented to the Royal Academy of Sciences at Paris , his own Extract of which was lately communicated to the Royal Society .

XXIII. On the water-barometer erected in the hall of the Royal Society

1832 ◽  
Vol 122 ◽  
pp. 539-574 ◽  
Keyword(s):  
Royal Society ◽  
Physical Science ◽  
The Other ◽  
Metallic Tube ◽  
French Academy ◽  
History Of ◽  
The Subject ◽  
The Common ◽  
Academy Of Sciences ◽  
Made In

I have for some time entertained an opinion, in common with some others who have turned their attention tot he subject, that a good series of observations with a Water-Barometer, accurately constructed, might throw some light upon several important points of physical science: amongst others, upon the tides of the atmosphere; the horary oscillations of the counterpoising column; the ascending and descending rate of its greater oscillations; and the tension of vapour at different atmospheric temperatures. I have sought in vain in various scientific works, and in the Transactions of Philosophical Societies, for the record of any such observations, or for a description of an instrument calculated to afford the required information with anything approaching to precision. In the first volume of the History of the French Academy of Sciences, a cursory reference is made, in the following words, to some experiments of M. Mariotte upon the subject, of which no particulars appear to have been preserved. “Le même M. Mariotte fit aussi à l’observatoire des experiences sur le baromètre ordinaire à mercure comparé au baromètre à eau. Dans l’un le mercure s’eléva à 28 polices, et dans Fautre l’eau fut a 31 pieds Cequi donne le rapport du mercure à l’eau de 13½ à 1.” Histoire de I'Acadérmie, tom. i. p. 234. It also appears that Otto Guricke constructed a philosophical toy for the amusement of himself and friends, upon the principle of the water-barometer; but the column of water probably in this, as in all the other instances which I have met with, was raised by the imperfect rarefaction of the air in the tube above it, or by filling with water a metallic tube, of sufficient length, cemented to a glass one at its upper extremity, and fitted with a stop-cock at each end; so that when full the upper one might be closed and the lower opened, when the water would fall till it afforded an equipoise to the pressure of the atmo­sphere. The imperfections of such an instrument, it is quite clear, would render it totally unfit for the delicate investigations required in the present state of science; as, to render the observations of any value, it is absolutely necessary that the water should be thoroughly purged of air, by boiling, and its insinuation or reabsorption effectually guarded against. I was convinced that the only chance of securing these two necessary ends, was to form the whole length of tube of one piece of glass, and to boil the water in it, as is done with mercury in the common barometer. The practical difficulties which opposed themselves to such a construction long appeared to me insurmount­able; but I at length contrived a plan for the purpose, which, having been honoured with the approval of the late Meteorological Committee of this Society, was ordered to be carried into execution by the President and Council.

Otto Meyerhof, 1884 - 1951

1954 ◽  
Vol 9 (1) ◽  
pp. 174-200 ◽  
Keyword(s):  
Nobel Prize ◽  
Royal Society ◽  
Artistic Development ◽  
School Life ◽  
National Academy Of Sciences ◽  
Long Period ◽  
University Of Edinburgh ◽  
The University ◽  
Academy Of Sciences ◽  
Foreign Member

Otto Meyerhof was born on 12 April 1884 in Berlin and died in Philadelphia on 6 October 1951 at the age of 67; he was the son of Felix Meyerhof, who was born in 1849 at Hildesheim, and Bettina Meyerhof, nee May, born in 1862 in Hamburg; both his father and grandfather had been in business. An elder sister and two younger brothers died long before him. In 1923 he shared the Nobel prize for Physiology (for 1922) with A. V. Hill. He received an Hon. D.C.L. in 1926 from the University of Edinburgh, was a Foreign Member (1937) of the Royal Society of London, an Hon. Member of the Harvey Society and of Sigma XI. In 1944 he was elected a member of the National Academy of Sciences, U.S.A. Otto Meyerhof went through his school life up to the age of 14 without delay, but there is no record that he was then brilliant. When he was 16 he developed some kidney trouble, which caused a long period of rest in bed. This period of seclusion seems to have been responsible for a great mental and artistic development. Reading constantly he matured perceptibly, and in the autumn of 1900 was sent to Egypt on the doctor’s advice for recuperation.

scholarly journals ANTONIO DE ULLOA, DISCOVERER OF PLATINUM

1998 ◽  
Vol 6 (7) ◽  
pp. 1-6
Author(s):  
Lavinel G. Ionescu
Keyword(s):  
South America ◽  
Royal Society ◽  
Scientific Societies ◽  
Spanish Family ◽  
And Mathematics ◽  
Academy Of Sciences ◽  
Royal Society Of London

Don Antonio de Ulloa, a member of a distinguished Spanish family, was born in 1716 and died in 1795. He studied physics and mathematics and was a member of many scientific societies, including the Academy of Sciences of Paris and the Royal Society of London. He traveled widely in Europe and the Americas and occupied many important positions, including those of Frigate Captain, Commander of the Royal Squadron of the Spanish Armada, Goverment of Huancavelica -Peru, Louisiana, and Florida. In l735, while a member of a scientific expedition sent by the Spanish and French governments to South America to measure a degree of meridian in Quito, close to the equator, he discovered platinum in the mines of Lavadero or wash gold in the district of Choco.

On the water barometer erected in the hall of the Royal Society

1837 ◽  
Vol 3 ◽  
pp. 134-136
Keyword(s):  
Royal Society ◽  
Present Situation ◽  
Atmospheric Tides ◽  
Steam Boiler ◽  
Periodic Oscillations ◽  
French Academy ◽  
Different Temperatures ◽  
History Of ◽  
Additional Support ◽  
Academy Of Sciences

The author having long considered that a good series of observa­tions with a water barometer would be of great value as throwing light upon the theory of atmospheric tides, of the horary and other periodic oscillations of the barometer, and of the tension of vapourat different temperatures, was desirous of learning whether any such series of observations had ever been made. But he could meet with none having any pretensions to accuracy ; for neither those of Otto Guericke, in whose hands the water barometer was merely a philo­sophical toy, nor the cursory notices of the experiments of Mariotte upon this subject contained in the History of the French Academy of Sciences, can be considered as having any such claim. The difficul­ties which opposed the construction of a perfect instrument of this kind long appeared to be insurmountable; but the author at length proposed a plan for this purpose, which, having been approved of by the late Meteorological Committee of the Royal Society, was ordered by the President and Council to be carried into execution. The author then enters fully into the details of the methods he em­ployed for constructing the whole of the apparatus, and for placing in its present situation in the centre of the winding staircase con­ducting to the apartments of the Royal Society. The tube was very skilfully made by Messrs. Pellattand Co. at the Falcon Glass-house. It was 40 feet long, and one inch in diameter at its lower end; and so nearly cylindrical, throughout its whole extent, as to diminish only by two tenths of an inch at its upper end. A second tube of the same dimensions was also made as a provision in reserve against any accident happening to the first. These tubes were both securely lodged in a square case by means of proper supports. A small ther­mometer with a platina scale, was introduced into the upper end of the tube. An external collar of glass was united to that end by heat­ing it. This was done with a view of giving it additional support, and of preventing it from slipping. This end of the tube was then drawn out into a fine tube ready for sealing with the blowpipe; and a small stopcock was fitted on to it. The cistern of the barometer was formed by a small copper steam boiler, 18 inches long, 11 wide, and 10 deep, capable of being closed by a cock, and having at the bottom a small receptacle for holding the lower end of the tube, so as to allow of the water in the cistern being withdrawn, without dis­ turbing that contained in the tube.

On the Front and Rear of a Free Procession of Waves in Deep Water

1906 ◽  
Vol 25 (1) ◽  
pp. 311-327 ◽  
Author(s):  
Lord Kelvin
Keyword(s):  
Deep Water ◽  
Royal Society ◽  
Present Communication ◽  
Exponential Factor

§ 11. The present communication is substituted for another bearing the same title, which was read before the Royal Society of Edinburgh on January 7th, 1887, because the result of that paper was rendered imperfect and unsatisfactory by omission of the exponential factor referred to in § 10 of my paper of February 1st, 1904. I shall refer henceforth to the last-mentioned paper as §1 …. 10 above.

Sign in / Sign up

Export Citation Format

Share Document