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Tables de Barlow carrés cubes racines carrées racines cubiques inverses des nombres entiers jusqu'a 10 000
Ch. Béranger 1959 in12. 1959. Cartonné.
Couverture défraîchie légèrement salie. Pages jaunis
An Account of the Construction of a Fluid Lens Refracting Telescope of eight inches aperture, and eight feet and three quarters in lenght, made for the Royal Society by george Dolland. Read November 22, 1832.
(London, Richard Taylor, 1833).
First printing of the paper in which he describes the 8 inch-telescope with the fluid lens - the so-called second Barlow-lens - required by the Royal Society for testing.""Barlow’s next major contribution makes his name still well known by amateur astronomers today. He invented the Barlow lens, a telescope lens consisting of a colourless liquid between two pieces of glass. The ""Barlow lens"", a modification of this telescope lens, is a negative achromatic combination of flint glass and crown glass. It is a negative lens used to extend the effective focal length of a telescope objective.""""His optical experiments began about 1827. There were several experiments to correct a single lens for chromatic aberration with concave lenses. These correctors were first placed near the first lens, but some opticians moved the concave lens further down the tube. This arrangement was described 1828 by Rogers in a paper to the Astronomical Society. By this a 3 inch concave flint lens was sufficient to correct a 9 inch crown glass. Smaller lenses near the focus would do the colour correction, but have to have steeper curves which would introduce spherical aberration.""
An account of a Series of experiments made with the view to the construction of an achromatic telescope with a fluid concave lens, instead of the usual lens of flint glass. In a letter adressed to Davies Gilbert.... Read January 17, 1828.
(London, Richard Taylor, 1828). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1828 - Part I. Pp. 105-112.
First appearance of the paper in which Barlow described his invention of the so-called first ""Barlow-Lens"".He constructed his first achromatic telescope lens by enclosing liquid carbon disulfide between two pieces of glass. The Barlow- lens has come into general use for increasing the eyepiece power of any optical instrument.
A Treatise on the Strength of Timber, Cast Iron, Malleable Iron, and other Materials" with Rules for Application in Architecture, Construction of Suspension Bridges, Railways, etc. With an Appendix on the Power of Locomotive Engines, and the Effect of...
London, John Weale, 1837. Contemp. hcalf. Gilt spine. A paperlabel pasted on upper part of spine. Stamps on foot of title-page. XII,492 pp., textillustrations and 7 folded engraved plates. 2 leaves in the Foreword brownspotted, marginal faint brownspots to some plates, otherwise fine.
This work was the first British monograph on the subject and it had a profound influence on the science of the strenght of materials and it established the sructural theory.The offered item is the importent 4th edition of the famous ""Essay on the Strength..."", 1817 and here Barlow states ""I have thought it right to remodel the whole, and to introduce into it a great variety of matter not found in the original Work"" (The Preface).
An Essay on Magnetic Attractions: particularly as respects the Deviation of the Compass on Shipboard, occasioned by the local Influence of the Guns, &c with an easy practical Method of Observing the same in all Parts of the World.
London, J. Taylor, 1820. Uncut in orig. boards. Part of Spine-paper gone and frontboard detached. Stamps on title-page. XII,145 pp., 1 folded engraved plate. Publisher's catalogue at end. Internally clean and fine.
First edition of a main contribution to the understanding of magnetic deviation.""In 1819 Barlow became interested in the compass deviation caused by the iron in ships. He therefore investigated the action of terrestrial magnetism and conducted a series of experiments on the interaction of iron objects and compass needles. His results, published as Essay on Magnetic Attractions (1820), described a method of correcting ships’ compasses by use of a small iron plate. For his discoveries in magnetism he was made a fellow of the Royal Society in 1823 and received the Copley Medal in 1825. He also received international recognition and several awards for his contribution to navigation."" (DSB).
Tables de Barlow - 4e édition
Dunod. 1966. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur bon état. 258p.. . . . Classification Dewey : 510-Mathématiques
Carrés, cubes, racines carées, racines cubiques, inverses des nombres entiers de 1 à 12500.... Classification Dewey : 510-Mathématiques
