Renaissance Vision from Spectacles to Telescopes

Renaissance Vision from Spectacles to Telescopes PDF

Author: Vincent Ilardi

Publisher: American Philosophical Society

Published: 2007

Total Pages: 408

ISBN-13: 9780871692597

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Deals with the history of eyeglasses from their invention in Italy ca. 1286 to the appearance of the telescope three cent. later. "By the end of the 16th cent. eyeglasses were as common in western and central Europe as desktop computers are in western developed countries today." Eyeglasses served an important technological function at both the intellectual and practical level, not only easing the textual studies of scholars but also easing the work of craftsmen/small bus. During the 15th cent. two crucial developments occurred: the ability to grind convex lenses for various levels of presbyopia and the ability to grind concave lenses for the correction of myopia. As a result, eyeglasses could be made almost to prescription by the early 17th cent. Illus.

An Introduction to Saline Lakes on the Qinghai—Tibet Plateau

An Introduction to Saline Lakes on the Qinghai—Tibet Plateau PDF

Author: Zheng Mianping

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 325

ISBN-13: 9401154589

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Since 1956 the author has been making extensive and detailed investigations of saline lakes on the Qinghai-Tibet plateau. On the basis of large amounts of reliable first-hand data and multidisciplinary analysis, the book deals with the temporal-spatial evolution of the plateau saline lakes and the prospects for inorganic salts and organic resources and their exploitation and protection, as well as the relationships between saline lakes and global changes. This book is the first English monograph on saline lakes on the Qinghai-Tibet Plateau - the `Roof of the World'. Compared with books about saline lakes in other areas of the world, this monograph is written in a multidisciplinary, comprehensive and systematic way. It may be used by graduate students, teachers, researchers, field geologists and engineers as a reference book in research, teaching, etc.

Studies of Cave Sediments

Studies of Cave Sediments PDF

Author: Ira D. Sasowsky

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 346

ISBN-13: 1441991182

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John E. Mylroie and Ira D. Sasowsky' Caves occupy incongruous positions in both our culture and our science. The oldest records of modem human culture are the vivid cave paintings from southern France and northern Spain, which are in some cases more than 30,000 years old (Chauvet, et ai, 1996). Yet, to call someone a "caveman" is to declare them primitive and ignorant. Caves, being cryptic and mysterious, occupied important roles in many cultures. For example, Greece, a country with abundant karst, had the oracle at Delphi and Hades the god of death working from caves. People are both drawn to and mortified by caves. Written records ofcave exploration exist from as early as 852 BC (Shaw, 1992). In the decade of the 1920's, which was rich in news events, the second biggest story (as measured by column inches of newsprint) was the entrapment of Floyd Collins in Sand Cave, Kentucky, USA. This was surpassed only by Lindbergh's flight across the Atlantic (Murray and Brucker, 1979).