Racle Georges (11 results)

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condition: New. Print on Demand. This book posits that constructing a dirigible aerostat is achievable with the scientific knowledge of the time. It presents two systems to orient an aerostat, addressing the challenge of maintaining a course in an atmosphere subject to unpredictable movement. The first system employs a large, round or square parachute-like plane attached to the aerostat; the second system uses a motor driving a propeller, which can be moved around the central axis of the craft. The author bases these designs on scientific principles and observations of bird flight, arguing that birds navigate by transforming a perpendicular fall into an oblique descent using their wings as inclined planes. The book draws parallels between aerial and marine navigation, emphasizing the need for a motor powerful enough to propel the craft against wind resistance. It concludes that, while further testing is necessary, the principles outlined within provide a path towards achieving dirigible aerostats and unlocking the potential of air travel. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Couverture souple. Condition: Très bon. In-8° broché.

Condition: Hervorragend. Zustand: Hervorragend | Sprache: Französisch | Produktart: Bücher | Keine Beschreibung verfügbar.

Couverture souple. Condition: Bon. Edition originale. In-8° broché, 32 pages Scientific explanation and proposal how to move horizontally a hot-air balloon. Rare early publication. First and original edition.

Condition: New. Print on Demand pp. 34.

LeatheBound. Condition: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leatherbound edition. Condition: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. Pages: 36. A perfect gift for your loved ones. Reprinted from 1883 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: French Pages: 36.

Paris, August Ghio, 1883. 32 pp. 6 b./w. figs. Orig. paper wrappers. - Some foxing. (Publications Scientifiques). Rare original early French publication on the air balloon.

LeatherBound. Condition: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1883 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 40 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: French.

Paris, Auguste Ghio, 1883, in-8°, 32 pp, sewn, orig. printed wrapper. Text in French. Livre en français. Scientific explanation and proposal how to move horizontally a hot-air balloon. Rare early publication. First and original edition.