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BAUMGARDT Ernest
La vision.
Couverture souple. Broché. 128 pages.
Reference : 132850
Livre. Editions P.U.F (Collection : Que sais-je? N° 528), 1968.
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5 book(s) with the same title
Computer Vision Virtual Reality and Robotics in Medicine: First International Conference CVRMed '95 Nice France April 3 - 6 1995. Proceedings ... Notes in Computer Science 905 Band 905)
Springer 1995 588 pages 15 24x2 29x23 37cm. 1995. Broché. 588 pages.
Bon état
La vision. Causeries prononcées à la Radiodiffusion Française dans le cadre de l'Introduction à la connaissance ScientifiqueÉ 1950-1951
Paris, Imprimerie "La Circex", 1951, in-8, 56pp, br, Publication du texte des 21 conférences données par Yves Le Grand, professeur d'optique physiologique à l'Ecole supérieure d'optique. L'appareil visuel chez les animaux, chez l'homme; formation des images; accommodation; amétropie; les verres correcteurs; le champ visuel; la rétine; la lumière; les couleurs; la sensibiliuté de l'oeil; les effets temporels et spaciaux; anomalies de la vision des couleurs; les théories de la vision; la vision du point, des détails, des mouvements, du relief; la vision en lumière naturelle, en lumière artificielle et la vision à travers les instruments Couverture rigide
Bon 56pp.
Contributions to the Physiology of Vision.- Part the First. On some remarkable, and hitherto unobserved, Phenomena of Binocular Vision. Received and Read June 21, 1838. (+) The Bakerian Lecture. - Contributions to the Physiology of Vision. Part the Se...
(London, Richard and John E. Taylor, 1838 a. 1852). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1838 - Part II. Pp. 371-394 and 2 engraved plates. Light browning to plates. + 1852- Part I. pp. 1-17 and 1 engraved plate. A dampstain to plate.
First appearance of these classic paper in physiological optics in which Wheatstone discovered the stereoscopic vison of the human eye.Stereopsis was first described by Wheatstone in 1838 (in the paper offered). In 1840 he was awarded the Royal Medal of the Royal Society for his explanation of binocular vision, a research which led him to make stereoscopic drawings and construct the stereoscope. He showed that our impression of solidity is gained by the combination in the mind of two separate pictures of an object taken by both of our eyes from different points of view. Thus, in the stereoscope, an arrangement of lenses or mirrors, two photographs of the same object taken from different points are so combined as to make the object stand out with a solid aspect. Sir David Brewster improved the stereoscope by dispensing with the mirrors, and bringing it into its existing form with lenses.""As the inventor of the stereoscope, later developed by Brewster, Wheatstone found himself - to his own surprise - the first since Leonardo da Vinvi to discuss depth perception in terms of the different image received by the eye...""(DSB XIV, p. 290).Garrison & Morton No. 1498.
Distant Electric Vision (+) Telegraphic Photography and Electric Vision (+) Telegraphic Photography and Electric Vision. - [THE FIRST DESCRIPTION OF AN ELECTRONIC METHOD OF PRODUCING TELEVISION]
London, Macmillan & Co, 1908. Royal8vo. Bound in contemporary half calf with five raised bands and two black leather title labels with gilt lettering to spine. In ""Nature"", May - October, 1908, Vol. LXXVIII [78]. Library label to first page of index and bookplate pasted on to front free end-paper. Fine and clean Fine and clean P. 151" Pp. 105-6. [Entire volume: LII, 686 pp.].
First printing of this seminal publication in the history of television" it is generally considered the earliest and most important paper in the early development of television. It constitutes the first description of an electronic method of producing television.Responding to an article in the June 4, 1908 issue of Nature by Shelford Bidwell entitled ""Telegraphic Photography and Electric Vision,"" A. A. Campbell Swinton wrote a letter to the editor of Nature proposing a solution to the most pressing problems in achieving ""distant electric vision"": ""This part of the problem of obtaining distant electric vision can probably be solved by the employment of two beams of kathode rays (one at the transmitting and one at the receiving station) synchronously deflected by the varying fields of two electromagnets placed at right angles to one another and energised by two alternating electric currents of widely different frequencies, so that the moving extremities of the two beams are caused to sweep simultaneously over the whole of the required surface within the one-tenth of a second necessary to take advantage of visual persistence."" (SWINTON).""The final, insurmountable problems with any form of mechanical scanning were the limited number of scans per second, which produced a flickering image, and the relatively large size of each hole in the disk, which resulted in poor resolution. In 1908 a Scottish electrical engineer, A. A. Campbell Swinton, wrote that the problems 'can probably be solved by the employment of two beams of kathode rays' instead of spinning disks. Cathode rays are beams of electrons generated in a vacuum tube. Steered by magnetic fields or electric fields, Swinton argued, they could 'paint' a fleeting picture on the glass screen of a tube coated on the inside with a phosphorescent material. Because the rays move at nearly the speed of light, they would avoid the flicker problem, and their tiny size would allow excellent resolution. Swinton never built a set (for, as he said, the possible financial reward would not be enough to make it worthwhile)..."" (Britannica). Hiers, Early Television no 366.
Distant Electric Vision (+) Telegraphic Photography and Electric Vision (+) Telegraphic Photography and Electric Vision. - [THE FIRST DESCRIPTION OF AN ELECTRONIC METHOD OF PRODUCING TELEVISION]
London, Macmillan & Co, 1908. Royal8vo. Bound in publisher's pictorial cloth. Gilt lettering and Nature's logo to spines and front board. In ""Nature"", May - October, 1908, Vol. LXXVIII [78]. Entire volumes offered. ""Emmanuel College"" in gilt lettering to spines. Two library stamps to title-page and first index page. A small tear to top of spine and signs after removal of label to spine. Very slight wear to extremities, otherwise a fine and clean copy. Rare in the publisher's binding. P. 151" Pp. 105-6. [Entire volume: LII, 686 pp.].
First printing of this seminal publication in the history of television" it is generally considered the earliest and most important paper in the early development of television. It constitutes the first description of an electronic method of producing television.Responding to an article in the June 4, 1908 issue of Nature by Shelford Bidwell entitled ""Telegraphic Photography and Electric Vision,"" A. A. Campbell Swinton wrote a letter to the editor of Nature proposing a solution to the most pressing problems in achieving ""distant electric vision"": ""This part of the problem of obtaining distant electric vision can probably be solved by the employment of two beams of kathode rays (one at the transmitting and one at the receiving station) synchronously deflected by the varying fields of two electromagnets placed at right angles to one another and energised by two alternating electric currents of widely different frequencies, so that the moving extremities of the two beams are caused to sweep simultaneously over the whole of the required surface within the one-tenth of a second necessary to take advantage of visual persistence."" (SWINTON).""The final, insurmountable problems with any form of mechanical scanning were the limited number of scans per second, which produced a flickering image, and the relatively large size of each hole in the disk, which resulted in poor resolution. In 1908 a Scottish electrical engineer, A. A. Campbell Swinton, wrote that the problems 'can probably be solved by the employment of two beams of kathode rays' instead of spinning disks. Cathode rays are beams of electrons generated in a vacuum tube. Steered by magnetic fields or electric fields, Swinton argued, they could 'paint' a fleeting picture on the glass screen of a tube coated on the inside with a phosphorescent material. Because the rays move at nearly the speed of light, they would avoid the flicker problem, and their tiny size would allow excellent resolution. Swinton never built a set (for, as he said, the possible financial reward would not be enough to make it worthwhile)..."" (Britannica). Siers & Siers, Early Television no 366.
