Download E-books The History and Practice of Ancient Astronomy PDF

By James Evans

The background and perform of historical Astronomy combines new scholarship with hands-on technological know-how to convey readers into direct touch with the paintings of historical astronomers. whereas tracing principles from historic Babylon to sixteenth-century Europe, the booklet areas its maximum emphasis at the Greek interval, while astronomers built the geometric and philosophical principles that experience made up our minds the following personality of Western astronomy. the writer methods this background in the course of the concrete information of historic astronomical perform. conscientiously prepared and generously illustrated, the publication can train readers the right way to do genuine astronomy utilizing the equipment of historical astronomers. for instance, readers will learn how to expect the subsequent retrograde movement of Jupiter utilizing both the arithmetical equipment of the Babylonians or the geometric tools of Ptolemy. they're going to the right way to use an astrolabe and the way to layout sundials utilizing Greek and Roman options. The ebook additionally includes supplementary workouts and styles for making a few operating astronomical tools, together with an astrolabe and an equatorium. greater than a presentation of astronomical equipment, the publication offers a serious examine the proof used to reconstruct old astronomy. It comprises wide excerpts from historical texts, meticulous documentation, and energetic discussions of the position of astronomy within the a number of cultures. available to a large viewers, this ebook will entice somebody drawn to how our figuring out of our position within the universe has replaced and built, from precedent days throughout the Renaissance.

Show description

Read Online or Download The History and Practice of Ancient Astronomy PDF

Similar Astronomy books

Stars: A Very Short Introduction (Very Short Introductions)

Each atom of bodies has been a part of a celeb. during this energetic and compact advent, astrophysicist Andrew King unearths how the legislation of physics strength stars to conform, using them via successive phases of adulthood prior to their inevitable and occasionally extraordinary deaths, to finish as remnants comparable to black holes.

Black Hole Blues and Other Songs from Outer Space

The authoritative tale of the headline-making discovery of gravitational waves—by an eminent theoretical astrophysicist and award-winning author. From the writer of ways the Universe acquired Its Spots and A Madman goals of Turing Machines, the epic tale of the medical crusade to list the soundtrack of our universe.

Distant Worlds: Milestones in Planetary Exploration

This ebook recounts the epic saga of the way we as people have come to appreciate the sunlight process. the tale of our exploration of the heavens, Peter Bond reminds us, started hundreds of thousands of years in the past, with the naked-eye observations of the earliest scientists and philosophers. Over the centuries, as our wisdom and knowing inexorably broadened and deepened, we faltered again and again, usually worked lower than misconceptions, and confronted possible insurmountable stumbling blocks to figuring out.

The Search for Life Continued: Planets Around Other Stars (Springer Praxis Books)

Barrie Jones addresses the query "are we by myself? ", that's some of the most commonly asked questions via scientists and non-scientists alike. within the look for existence persevered, this question is addressed scientifically, and the writer isn't afraid to incorporate hypothesis. certainly, the writer believes past moderate doubt that we aren't by myself and this trust relies firmly on frontier technological know-how of the main inventive type.

Additional info for The History and Practice of Ancient Astronomy

Show sample text content

Four. ) a few model of the compound sighting tube was once additionally constructed in antiquity. It i s very unlikely to b e certai n o f th e aspect s o f constructio n becaus e no suc h old instrumen t live on s and n o extan t Gree ok tex t offer s a n adequat e description. in spite of the fact that , th e followin g extract fro m Geminu s depart s n o doub t that h e wa s general wit h a model o f th e dioptr a equivalen t i n principl e t o the compoun d sightin g bath e o f figur e 1. 23 . Geminu s wa s th e autho r o f a n undemanding astronomy textual content, the advent to the Phenomena, written aroun d A. D. 50 . EXTRACT FRO M G E M I N U S advent t o the Phenomena, XI I determine 1. 19 . Th e altitud e ( X o f th e celestia l pole i s equivalent t o th e latitud e L o f th e observer . The cosmo s strikes in a round movement from eas t t o west. For al l the celebrity s which are saw within the eas t after sunse t are saw, because the evening advances, emerging regularly larger and better ; then they're obvious at th e meridian . because the evening advances, an analogous stars are saw declining in the direction of the west; and at las t the y are see n environment . And thi s occurs each da y t o al l th e stars . hence, i t i s transparent tha t the full cosmos, in al l its components, strikes from eas t t o west. That i t make s a round movement is instantly transparent fro m th e fac t tha t all th e celebrity s ris e fro m th e sam e plac e and se t i n th e sam e plac e [o n th e horizon]. in addition, all of the megastar s saw throughout the dioptra s are noticeable to be creating a round motio n throughout the whol e rotation of the dioptras. 37 THE BIRT H O F ASTRONOM Y The las t quoted sentenc e truly refers to an device kind of reminiscent of th e compoun d sightin g bath e o f determine 1. 23 . If the compoun d sightin g tube is equipped with protractors , i t can be utilized t o degree angles . certainly , Geminu s comment s tha t a dioptr a ma y b e use d t o divide th e zodia c int o twelv e equa l components , whic h implie s a n instrumen t outfitted wit h som e sor t o f angula r scale . The compoun d sightin g bath e o f determine 1. 2 three i s no t suite d t o dividin g th e zodia c int o equa l half s (becaus e of the obliquity , o r slantedness , o f the zodia c wit h respec t t o th e equator) , bu t a furthe r modifie d dioptr a migh t hav e don e th e task. although, b y th e tim e of Ptolem y (secon d centur y A. D. ) , an d perhap s b y th e tim e o f Hipparchu s (second centur y B. C. ) , the dioptr a wa s changed b y the armillar y sphere because the device o f selection fo r measuring the location s o f the celebrities . From the n on , the dioptra' s chie f rol e i n astronom y wa s tha t o f a demonstratio n devic e o r educating instrument . In surveying (as against astronomy), the dioptra sa w persevered provider. It wa s elaborated int o a fairl y sophisticate d surveyor' s device, analogous to th e moder n theodolite . A wate r leve l wa s adde d t o th e stan d an d th e sighting bathtub e (o r ro d equippe d wit h attractions ) wa s fitte d wit h a protracto r s o that i t coul d b e used t o measur e angles, a s for exampl e th e angula r top o f a mountai n summit .

Rated 4.96 of 5 – based on 43 votes