Échos d’une tradition mythologique américaine : Joseph Légaré et le tableau d’histoire (1825-1855)

Pour respecter les droits d'auteur, la version électronique de ce mémoire a été dépouillée de ses documents visuels et audio-visuels. La version intégrale du mémoire a été déposée au Service de la gestion des documents et des archives de l'Université de Montréal.

University of Michigan Men's Basketball Team, 1962

Back row: coach Dave Strack, Charles Higgs, James Ludwig, Douglas Greenwald, Dana Baldwin, Thomas Cole, John Harris, John Oosterbaan, David Kroll, asst. coach James Skala, asst. coach Tom Jorgenson

Front Row: Hiram Jackson, Thomas Withrow, Thomas Eveland, captain Jon Hall, Robert Cantrell, Douglas Herner, Steven Schoenherr, Barry Andrews

University of Michigan Men's Basketball Team, 1963

Back Row:asst. coach Tom Jorgenson, Richard Hildreth, John Oosterbaan, George Pomey, George Thomas Cole, Bill Buntin, Douglas Greenwald, John Harris, Lawrence Tregoning, Paul Schuldt, asst. coach James Skala

Front Row: Edward Petrick, Robert Cantrell, Horace Thomas Ludwig, coach Dave Strack, Charles Adams, Hiram Jackson, Douglas Herner

University of Michigan Men's Basketball Team, 1961

Back Row: mngr. Bruce Lanard, Charles Higgs, George Thomas Cole, Robert M. Brown

Front Row: Steve Schoenherr, Richard Donley, captain John Tidwell, coach Dave Strack, Jon Hall, Thomas Eveland, Robert M. Brown, Donald Scott Maentz

University of Michigan Men's Basketball Team, 1963

Back Row: George Pomey, Richard Hildreth, Lawrence Tregoning, William Buntin, Douglas Greenwald,

Middle Row: asst. coach Tom Jorgenson, Horace Ludwig, Charles Adams, Paul Schuldt, Edward Petrick, asst. coach Tom Skala

Front Row: Douglas Herner, John Harris, captain George Thomas Cole, coach Dave Strack, Robert Cantrell, John Oosterbaan, Thomas Eveland

Commentaire de S. THOMAS D'AQUIN sur la Consolation de la philosophie de BOÈCE, texte latin, suivi de la traduction française, en vers et en prose, attribuée à JEAN DE MEUNG, de la Consolation de la philosophie.

Contient : « Sancti Thome de Aquino super libris Boecii de Conso latione philosophie comentum cum expositione feliciter incipit. Philosophie servias oportet... — ... judicis cuncta cernentis. Gloria Deo sempiterno » ; « Cy commence le prologue ou proheme du livre de Boece de Consolacion, lequel maistre Jehan de Meun translata de latin en françoys, si comme se contient cy après, et l'envoya au roy Phelippe le quart. » (Cf. le mémoire de M. Delisle, dans la Bibliothèque de l'École des Chartes, 1873, t. XXXIV, p. 8-10)

Adolphe Yvon : discours prononée le 13 septembre 1893 au nom de l'École des Beaux-Arts en la cérémonie des obèsques du maître : précédé de pages extraites des souvenirs inédits du peinture /

Mode of access: Internet.

Présages tirés du pouls d'après l'école de sphygmique /

Mode of access: Internet.

The works of Thomas Love Peacock, including his novels, poems, fugitive pieces, criticisms, etc.,

v. 1. Preface. Biographical notice. Headlong hall. Melincourt. Nightmare abby.--v. 2. Maid Marian. Misfortunes of Elphin. Crotchet castle. Gryll grange--v. 3. Poetry. Miscellanies. Four ages of poetry. Horæ dramaticæ, no. 1-3 . Shelley. Shelley letters.

Thomas Young's contribution to visual optics : the Bakerian lecture "On the mechanism of the eye"

Thomas Young (1773-1829) carried out major pioneering work in many different subjects. In 1800 he gave the Bakerian Lecture of the Royal Society on the topic of the “mechanism of the eye”: this was published in the following year (Young, 1801). Young used his own design of optometer to measure refraction and accommodation, and discovered his own astigmatism. He considered the different possible origins of accommodation and confirmed that it was due to change in shape of the lens rather than to change in shape of the cornea or an increase in axial length. However, the paper also dealt with many other aspects of visual and ophthalmic optics, such as biometric parameters, peripheral refraction, longitudinal chromatic aberration, depth-of-focus and instrument myopia. These aspects of the paper have previously received little attention. We now give detailed consideration to these and other less-familiar features of Young’s work and conclude that his studies remain relevant to many of the topics which currently engage visual scientists.

Thomas Young’s contributions to geometrical optics

In addition to his work on physical optics, Thomas Young (1773-1829) made several contributions to geometrical optics, most of which received little recognition in his time or since. We describe and assess some of these contributions: Young’s construction (the basis for much of his geometric work), paraxial refraction equations, oblique astigmatism and field curvature, and gradient-index optics.

Thomas Young’s investigations in gradient-index optics

Purpose: James Clerk Maxwell is usually recognized as being the first, in 1854, to consider using inhomogeneous media in optical systems. However, some fifty years earlier Thomas Young, stimulated by his interest in the optics of the eye and accommodation, had already modeled some applications of gradient-index optics. These applications included using an axial gradient to provide spherical aberration-free optics and a spherical gradient to describe the optics of the atmosphere and the eye lens. We evaluated Young’s contributions. Method: We attempted to derive Young’s equations for axial and spherical refractive index gradients. Raytracing was used to confirm accuracy of formula. Results: We did not confirm Young’s equation for the axial gradient to provide aberration-free optics, but derived a slightly different equation. We confirmed the correctness of his equations for deviation of rays in a spherical gradient index and for the focal length of a lens with a nucleus of fixed index surrounded by a cortex of reducing index towards the edge. Young claimed that the equation for focal length applied to a lens with part of the constant index nucleus of the sphere removed, such that the loss of focal length was a quarter of the thickness removed, but this is not strictly correct. Conclusion: Young’s theoretical work in gradient-index optics received no acknowledgement from either his contemporaries or later authors. While his model of the eye lens is not an accurate physiological description of the human lens, with the index reducing least quickly at the edge, it represented a bold attempt to approximate the characteristics of the lens. Thomas Young’s work deserves wider recognition.