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

By Robert A. Crone

This is the 1st finished textual content at the heritage of colour theories considering the fact that Halbertsma's e-book of 1947. colour is mentioned in shut reference to the evolution of principles of sunshine and imaginative and prescient. The ebook has chapters at the historical 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 heritage of the three-color speculation; at the trichromatic conception and faulty colour imaginative and prescient; and on Goethe's, Schopenhauer's and Hering's theories. New knowing of the constitution and capabilities of the retina and the mind eventually leads to the trendy technology of colour imaginative and prescient.
A heritage of Color has been written for ophthalmologists, optometrists and others who're attracted to visible technology and its heritage. The booklet calls for no really expert knowledge.

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

Example text

Their interest was aroused by what was considered to be the noblest in nature, light, and the noblest in the human body, the eye. Aristotle, Ptolemy, Alhazen and Leonardo da Vinci have already been considered. Johannes Kepler [7], with whom this chapter closes, is of the same order of greatness. Johannes Kepler (1571-1630) studied Lutheran theology in Tubingen, but became so obsessed by astronomy that he gave up his study. He worked with the Danish astronomer Tycho Brahe and, after his death, succeeded him as Imperial Mathematician at the court of Kaiser Rudolph II in Prague.

At first very few recognized in it a complete revolution in man's concept of the world. Johannes Kepler was the first astronomer to take Copernicus' heliocentric system really seriously, and thus to believe that the earth was just a planet among other planets. Kepler's work was based on the extremely precise measurements of his Danish master, Tycho Brahe. A discrepancy of 8 minutes of are between observation and calculation forced Kepler - as he hirnself writes - after years of reckoning, to a complete revision of astronomy.

According to Alhazen these are of little importance: the right angle is the ideal angle. An arrow directed straight at the victim is more dangerous than a glancing shot! 24 The visual information goes straight from the lens to the optic canal. Naturally the rays may not continue to progress in a straight line; they would then, as in the camera obscura, cause inversion of the image when they have passed the convergence point in the middle of the eye. Alhazen again has resource to an artifice: the rays which leave the lens are parallel.

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