# Cheerful, by Request

Read Books, 2008 - Fiction - 372 pages
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 ...

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### About the author (2008)

Edna Ferber was born in Kalamazoo, Michigan, Aug. 15, 1885. She spent her early career as a reporter. In 1910, Everybody's Magazine published her short story, The Homely Heroine, set in Appleton, Wisconsin. Ferber's novel, Dawn O'Hara, the story of a newspaperwoman in Milwaukee, followed in 1911. She gained national attention for her series of Emma McChesney stories, tales of a traveling underskirt saleswoman that were published in national magazines. A play based on the stories, Our Mrs. McChesney, was produced in 1915, starring Ethel Barrymore. With collaborator George S. Kaufman, Ferber wrote acclaimed plays Dinner at Eight and The Royal Family. Ferber won the Pulitzer Prize in 1925 for So Big, the story of a woman raising a child on a truck farm outside of Chicago. Her best known books include Show Boat, Cimarron, Giant and Ice Palace. Show Boat was made into a classic movie and Broadway musical; the film version of Cimarron, won the Academy Award for Best Picture in 1931. Ferber wrote two autobiographies, A Peculiar Treasure published in 1939 and A Kind of Magic in 1963. She died of cancer on April 16, 1968.