検索キーワード： 天文学・宇宙科学

William (Billy) Mitchell was a U.S. Army officer who, during World War I, came to command all U.S. Army air operations in France. He became a strong believer in air power and predicted that in the next war, bombers would be the decisive weapon. After WWI ended he became a forceful advocate for allocating funds to develop a powerful U.S. Air Force as an independent military branch. At the same time he argued for reducing the Navy's heavy spending on battleships, which he was convinced would be easily sunk by enemy aircraft. His efforts to change military policy in these areas became so ...

LibriVox volunteers bring you 15 recordings of Our Mat by A. B. Paterson. This was the Weekly Poetry project for July 14, 2019. ------ Banjo Paterson's speculations on a piece of prison craft. This poem references The Darlinghurst Gaol, a former Australian prison located in Darlinghurst, New South Wales. Australian poet Henry Lawson spent time incarcerated there during some of the turbulent years of his life and described the gaol as Starvinghurst Gaol due to meagre rations given to the inmates. It was closed in 1914 and has subsequently been repurposed to house the National Art School. (...

William Caruthers was a retired newspaperman who spent 25 years listening to stories told by the inhabitants of Death Valley. This 1951 book collects those stories; the printed version has many interesting pictures. ''Of the actors who made the history of the period, few remain. It was the writer’s good fortune that many of these men were his friends. It is the romance, the comedy, the often stark tragedy these men left along the trail which you will find in the pages that follow.'' (Preface and David Wales)

This is the last volume of the 15-volume series The World’s Story, originally started by Eva March Tappan. This book, edited by Horatio W. Dresser (1866-1954) deals exclusively with the time of the First World War, the events leading up to it, the battles and war engines, the political and diplomatic background endeavours and the cost - human and monetary - of this War. - Summary by Sonia

Early in the morning of Wednesday, April 18, 1906, the San Francisco area was shaken by a massive earthquake. Over the course of the next four days, fires spread through large swaths of the city, started by broken gas lines, fallen electrical wiring, and damaged chimneys. Broken water mains prevented the fire department from effectively battling the blazes. By the time the fires were finally extinguished on the afternoon of Saturday, April 21, nearly 3000 people were dead and 500 city blocks destroyed. Before the year was over, the Edward Hilton Company of San Francisco had collected and ...

This audiobook is narrated by an AI Voice. Pilot's Handbook of Aeronautical Knowledge FAA-H-8083-25C Audiobook This audiobook provides the basic knowledge that is essential for pilots. It introduces pilots to the broad spectrum of knowledge that will be needed as they progress in their pilot...

"Die Lippen der Weisheit sind verschlossen, außer für die Ohren des Verstehenden." Mit diesem geheimnisvollen Leitsatz beginnt eines der einflussreichsten Werke der westlichen Esoterik: "Das Kybalion". 1908 in den Vereinigten Staaten von den anonym gebliebenen "Drei Eingeweihten"...

Moon’s Iᴍᴘᴇʀɪᴀʟɪsᴍ ᴀɴᴅ Wᴏʀʟᴅ Pᴏʟɪᴛɪᴄs is perhaps the best-known work of the Columbia University professor and political scientist; It was published in 1926 and did not go out-of-print until at least 1940. “What convenient volume,” he asks, exists as a “general account of the greater imperialism of our own times?” A question which was suitably answered by the publication of this sweeping survey of the field. Written in what would prove to be the gathering twilight of European imperialism, and with the inclination towards reflection that only the ...

This present work may be described as history of the medieval Popes, with the history of the city of Rome, and its civilization, as a background, the author's desire being so to combine the two stories as to produce a true picture of what Rome was in the middle ages. Volume two will start with a continuation of chapter 6, dealing with the ongoing battles with heresy; moving on to the pontificates from Leo the Great to Vigilius; art and architecture in Rome, including its decline; and Rome's domination by the Goths and Byzantium.

This memoirs chronicles Madame Vigée Lebrun's childhood and the early discovery of her talent, the fortuitous break that introduced her to the world of "portraiture of the stars," her expeditious flight from France at the height of the French Revolution, her continued success as a portraitist for the various royal houses of Europe, and her ultimate return to France. In this memoirs, Lebrun illustrates how she overcame the prejudices of the art world that prescribed how women painters could practice their art form, as well as the subject matter they could paint. (James K. White)

The memoirs of Chateaubriand continue in Volume 5, with the author, now a grand hommes des lettres, still in the thick of political events, telling his story with his trademark acerbity and melancholy, interspersed with extracts from his voluminous correspondence with the literary, intellectual and political stars of his age.

The Discourse on Method is best known as the source of the famous quotation “cogito ergo sum”, “I think, therefore I am.” …. It is a method which gives a solid platform from which all modern natural sciences could evolve. With this work, the idea of skepticism was revived from the ancients such as Sextus Empiricus and modified to account for a truth that Descartes found to be incontrovertible. Descartes started his line of reasoning by doubting everything, so as to assess the world from a fresh perspective, clear of any preconceived notions. (Summary by Wikipedia)

Abner Doubleday was a busy man. He rose to be a major general during the American Civil War, started the first cable car company in San Francisco, and is credited (though perhaps erroneously) with inventing the game of baseball. In 1861, he had the distinction as a captain to be second-in-command of Ft. Moultrie, one of the harbor defenses of Charleston, SC.. When that state seceded from the Union, Doubleday and the garrison of artillerists manning the fort were cut off from supplies and reinforcements. Through a tumultuous period, during which the command transferred to Ft. Sumter and soon ...

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