By Jean-Louis Tassoul
This booklet offers a complete evaluate of the historical past of rules concerning the sunlight and the celebs, from antiquity to trendy instances. theoretical astrophysicists who've been lively within the box because the early Nineteen Sixties inform the tale in fluent prose. approximately 1/2 the booklet covers lots of the theoretical examine performed from 1940 to the shut of the 20th century, a wide physique of labor that has so far been little explored by means of historians.
the 1st bankruptcy, which outlines the interval from approximately 3000 B.C. to 1700 A.D., exhibits that at each degree in background humans have had a selected figuring out of the sunlight and stars, and that this has always advanced over the centuries. subsequent the authors systematically tackle the great mass of observations astronomy collected from the early 17th century to the early 20th. the remainder 4 chapters learn the background of the sector from the physicists point of view, the emphasis being on theoretical paintings from the mid-1840s to the past due 1990s--from thermodynamics to quantum mechanics, from nuclear physics and magnetohydrodynamics to the outstanding advances via to the overdue Nineteen Sixties, and eventually, to more moderen theoretical paintings. meant quite often for college students and lecturers of astronomy, this publication can be an invaluable reference for training astronomers and scientifically curious normal readers.
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Additional info for A Concise History of Solar and Stellar Physics
In 1668, he also constructed a one-inch reflecting telescope in order to overcome some of the problems with glass lenses. ) Owing to technical difficulties, however, about half a century elapsed before a reflecting telescope could equal in performance the best refracting telescopes of the time. 30 CHAPTER 2 Progress in solar spectroscopy was also quite slow, for the first great discovery after Newton’s spectrum studies was not made until the 1810s, when an almost countless number of dark lines were found in the spectrum of sunlight.
Each planet describes an ellipse, with the sun being at one focus. 2. The speed of each moving planet changes with distance from the sun, so that the straight line joining each planet to the sun sweeps out equal areas in any two equal intervals of time. 3. The squares of the periods of revolution of any two planets (including the earth) about the sun are in the same ratio as the cubes of their mean distances from the sun. 7 Frontispiece of Galileo’s Dialogue on the Two Chief World Systems, printed in Florence in 1632.
This was a most popular explanation of planetary light: the planets were visible to us because they were partly transparent and, hence, could be filled more or less completely with the sun’s light. The Norman polymath Nicole Oresme (c. 1325–1382), a scholar in Paris and later bishop of Lisieux, thought that the self-luminosity option was more probable. Interest in the light source of the stars became manifest in the late sixteenth century, but again scholars were hardly of one mind. Some were convinced that the fixed stars received their light from the sun because they were not so far off that the sun’s light could not reach them.
A Concise History of Solar and Stellar Physics by Jean-Louis Tassoul