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Author | : Arthur Bryant |
Publisher | : Leffmann Press |
Total Pages | : 432 |
Release | : 2009-03-01 |
Genre | : History |
ISBN | : 1444600133 |
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...earth. r' = radius of moon, or other body. P = moon's horizontal parallax = earth's angular semidiameter as seen from the moon. f = moon's angular semidiameter. Now = P (in circular measure), r'-r = r (in circular measure);.'. r: r':: P: P', or (radius of earth): (radios of moon):: (moon's parallax): (moon's semidiameter). Examples. 1. Taking the moon's horizontal parallax as 57', and its angular diameter as 32', find its radius in miles, assuming the earth's radius to be 4000 miles. Here moon's semidiameter = 16';.-. 4000::: 57': 16';.-. r = 400 16 = 1123 miles. 2. The sun's horizontal parallax being 8"8, and his angular diameter 32V find his diameter in miles. ' Am. 872,727 miles. 3. The synodic period of Venus being 584 days, find the angle gained in each minute of time on the earth round the sun as centre. Am. l"-54 per minute. 4. Find the angular velocity with which Venus crosses the sun's disc, assuming the distances of Venus and the earth from the sun are as 7 to 10, as given by Bode's Law. Since (fig. 50) S V: VA:: 7: 3. But Srhas a relative angular velocity round the sun of l"-54 per minute (see Example 3); therefore, the relative angular velocity of A V round A is greater than this in the ratio of 7: 3, which gives an approximate result of 3"-6 per minute, the true rate being about 4" per minute. Annual ParaUax. 95. We have already seen that no displacement of the observer due to a change of position on the earth's surface could apparently affect the direction of a fixed star. However, as the earth in its annual motion describes an orbit of about 92 million miles radius round the sun, the different positions in space from which an observer views the fixed stars from time to time throughout the year must be separated ...
Author | : Scott Kelly |
Publisher | : Vintage |
Total Pages | : 400 |
Release | : 2017-10-17 |
Genre | : Biography & Autobiography |
ISBN | : 1524731609 |
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NATIONAL BEST SELLER A stunning, personal memoir from the astronaut and modern-day hero who spent a record-breaking year aboard the International Space Station—a message of hope for the future that will inspire for generations to come. The veteran of four spaceflights and the American record holder for consecutive days spent in space, Scott Kelly has experienced things very few have. Now, he takes us inside a sphere utterly hostile to human life. He describes navigating the extreme challenge of long-term spaceflight, both life-threatening and mundane: the devastating effects on the body; the isolation from everyone he loves and the comforts of Earth; the catastrophic risks of colliding with space junk; and the still more haunting threat of being unable to help should tragedy strike at home--an agonizing situation Kelly faced when, on a previous mission, his twin brother's wife, American Congresswoman Gabrielle Giffords, was shot while he still had two months in space. Kelly's humanity, compassion, humor, and determination resonate throughout, as he recalls his rough-and-tumble New Jersey childhood and the youthful inspiration that sparked his astounding career, and as he makes clear his belief that Mars will be the next, ultimately challenging, step in spaceflight. In Endurance, we see the triumph of the human imagination, the strength of the human will, and the infinite wonder of the galaxy.
Author | : Arthur Bryant |
Publisher | : |
Total Pages | : |
Release | : 1944 |
Genre | : |
ISBN | : |
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Author | : Alfred Lansing |
Publisher | : Basic Books |
Total Pages | : 412 |
Release | : 2014-04-29 |
Genre | : History |
ISBN | : 0465058795 |
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Experience “one of the best adventure books ever written” (Wall Street Journal) in this New York Times bestseller: the harrowing tale of British explorer Ernest Shackleton's 1914 attempt to reach the South Pole. In August 1914, polar explorer Ernest Shackleton boarded the Endurance and set sail for Antarctica, where he planned to cross the last uncharted continent on foot. In January 1915, after battling its way through a thousand miles of pack ice and only a day's sail short of its destination, the Endurance became locked in an island of ice. Thus began the legendary ordeal of Shackleton and his crew of twenty-seven men. When their ship was finally crushed between two ice floes, they attempted a near-impossible journey over 850 miles of the South Atlantic's heaviest seas to the closest outpost of civilization. In Endurance, the definitive account of Ernest Shackleton's fateful trip, Alfred Lansing brilliantly narrates the harrowing and miraculous voyage that has defined heroism for the modern age.
Author | : Arthur Bryant |
Publisher | : |
Total Pages | : 370 |
Release | : 1955 |
Genre | : Europe |
ISBN | : |
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Author | : Arthur Bryant |
Publisher | : |
Total Pages | : 392 |
Release | : 1942 |
Genre | : |
ISBN | : |
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Author | : Bryan Bryant |
Publisher | : |
Total Pages | : 370 |
Release | : 1955 |
Genre | : |
ISBN | : |
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Author | : Arthur Wynne Morgan Bryant |
Publisher | : |
Total Pages | : 446 |
Release | : 1942 |
Genre | : Europe |
ISBN | : |
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Author | : Jj O'Malley |
Publisher | : David Bull Publishing |
Total Pages | : 0 |
Release | : 2009 |
Genre | : Automobile racing |
ISBN | : 9781935007005 |
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Back by popular demand, a revised and updated edition of the complete history of the Daytona 24 Hour endurance race.
Author | : Sir Arthur Wynne Morgan Bryant |
Publisher | : |
Total Pages | : |
Release | : 1942 |
Genre | : |
ISBN | : |
Download The Years of Endurance, 1793-1802. [With Maps.]. Book in PDF, ePub and Kindle