Ophthalmology

New PDF release: A History of Color: The Evolution of Theories of Lights and

By Robert A. Crone

ISBN-10: 940070870X

ISBN-13: 9789400708709

ISBN-10: 9401539413

ISBN-13: 9789401539418

This is the 1st finished textual content at the background of colour theories due to the fact that Halbertsma's booklet of 1947. colour is mentioned in shut reference to the evolution of rules of sunshine and imaginative and prescient. The publication has chapters at the historic Greek principles of imaginative and prescient and colour; at the contributions of Arabic technology; at the clinical Revolution from Kepler to Newton; at the early historical past of the three-color speculation; at the trichromatic concept and faulty colour imaginative and prescient; and on Goethe's, Schopenhauer's and Hering's theories. New realizing of the constitution and capabilities of the retina and the mind ultimately ends up in the trendy technology of colour imaginative and prescient.
A heritage of Color has been written for ophthalmologists, optometrists and others who're drawn to visible technology and its background. The booklet calls for no really good knowledge.

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Additional info for A History of Color: The Evolution of Theories of Lights and Color

Example text

26 The refraction of light Alhazen gave an explanation for the phenomenon of refraction [7]. Unlike Aristotle he considered that the velocity of light was finite, and he assumed that light was slowed down in a more compact medium. He asked himself why a ray of light falling at an angle out of the air into water is be nt towards the vertical, and gave the following answer: because the horizontal component of the ray is slowed down more than the vertical component. (Again the slanting rays have to suffer, like the oblique rays which fall on the cornea).

Aguilonius distinguishes three sorts of colors. He calls the familiar colors of colored objects 'true colors'. The colors of the rainbow and peacock's 38 feathers are classified as 'apparent' colors ('the secret of which God alone knows'). And finally there are 'intentional' colors, invisible colors in light, which only become visible when light falls on an object. Thus a ray of sunlight, filtered through blue stained glass in a cathedral, can by means of an invisible ray throw a patch of blue light on a bishop's grave.

Anyone who opposed it was threatened with capital punishment in a decree of the Paris parliament in 1624). One conservative scholastic, Franciscus Aguilonius, had much to say about color (1613) and is considered in this chapter. 36 Color in the Renaissance No great changes occur during the Renaissance in the science of color. Even where neo-platonism or another philosophy takes the place of Aristotelian theory, color continues to be determined by the visual objects and any theory which attempts to explain color on the basis of the nature of light is hopeless from the start.

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A History of Color: The Evolution of Theories of Lights and Color by Robert A. Crone


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