By David Ewing Duncan

ISBN-10: 1857029798

ISBN-13: 9781857029796

The 5,000-year fight to align the heavens with the clock and what occurred to the lacking ten days. Measuring the day-by-day and every year cycle of the cosmos hasn't ever been completely straightforward.The 12 months 2000 is then again the yr 2544 (Buddhist), 6236 (Ancient Egyptian), 5761 (Jewish) or just the 12 months of the Dragon (Chinese). the tale of the construction of the Western calendar is a narrative of emperors and popes, mathematicians and clergymen, and the expansion of clinical calculation to the purpose the place, bizarrely, our size of time through atomic pulses is now extra acurate than Time itself: the Earth is an aged woman and a little bit eccentric - she loses part a moment a century. Days were invented (Julius Caesar wanted an additional eighty days in 46BC), misplaced (Pope Gregory XIII ditched ten days in 1582) and moved (because Julius Caesar had thirty-one in his month, Augustus decided that he must have an identical, so he pinched one from February). The Calendar hyperlinks politics and faith, astronomy and arithmetic, Cleopatra and Stephen Hawking. And it's released as thousands of computing device clients ask yourself what is going to take place whilst, after 31 December 1999, their dates run out...

Show description

Read Online or Download The Calendar: The 5000-year Struggle to Align the Clock and the Heavens - and What Happened to the Missing Ten Days PDF

Similar instruments & measurement books

Download e-book for iPad: Sky is Your Laboratory: Advanced Astronomy Projects for by Robert Buchheim

For the skilled novice astronomer who's pondering if there's something necessary, necessary, and everlasting that may be performed along with his or her observational talents, the answer's, "Yes, you could! " this is often the e-book for the skilled novice astronomer who's able to take a brand new step in his or her astronomical trip.

Get Mental Health Practice in a Digital World: A Clinicians PDF

The aim of the psychological health and wellbeing perform in a electronic global: A Clinicians consultant e-book is to arrange clinicians to appreciate, seriously review, and embody well-designed and proven applied sciences that experience the potential for reworking the entry, affordability, and responsibility of psychological healthcare.

Remote Observatories for Amateur Astronomers: Using - download pdf or read online

Beginner astronomers who are looking to increase their features to give a contribution to technological know-how desire glance no farther than this advisor to utilizing distant observatories. The individuals conceal how one can construct your personal distant observatory in addition to the prevailing infrastructure of industrial networks of distant observatories which are on hand to the novice.

Download PDF by Kent Lewandrowski, Patrick M. Sluss: Utilization Management in the Clinical Laboratory and Other

This e-book is the 1st accomplished textual content on usage administration within the medical laboratory and different ancillary providers. It offers an in depth review on tips to determine a profitable usage administration software, targeting such concerns as management, governance, informatics, and alertness of usage administration instruments.

Extra resources for The Calendar: The 5000-year Struggle to Align the Clock and the Heavens - and What Happened to the Missing Ten Days

Example text

Sometime around 432 BC Babylonian mathematicians figured out that seven years of thirteen lunar months followed by twelve years of twelve lunar months would equal almost exactly nineteen solar years. This later became known as the Metonic cycle, after the Greek astronomer Meton (c. fifth century BC). It works by inserting or ‘intercalating’ extra months into the standard 12-month lunar year. But even this 19-year system is not completely exact, running several hours fast. It also proved unwieldy and impractical for everyday use, since few people were willing to keep track of such a complicated system over so long a time.

For nearly two years he worked feverishly, finally dispatching an epic treatise to Rome in 1267 called Opus Maius (Major Work). In this book and two others, hand-carried by a faithful servant named John along the sometimes treacherous medieval highway across Europe, Bacon expounds on topics ranging from a study of languages and the geometry of prisms to the geography of the Holy Land. His diatribe describing the flaws in the calendar falls in a long and rambling chapter on mathematics, in a section where he advocates using the objectivity of numbers and science to expose mistakes.

This came from rounding off the lunar month to 30 days, which fitted neatly into the Sumerians’ mathematic and astronomic system. This system is based on the numbers 6 and 60, which equal 360 when multiplied--the number we still use to divide the sky and every circular plane. No one knows why the Sumerians and later the Babylonians chose these numbers, though four thousand years later they remain the numeric basis for everything from determining one’s position at sea to the location in the sky of a distant galaxy vis-a-vis the earth.

Download PDF sample

The Calendar: The 5000-year Struggle to Align the Clock and the Heavens - and What Happened to the Missing Ten Days by David Ewing Duncan

by Daniel

Rated 4.45 of 5 – based on 21 votes