So in summary, Samuel Rowbotham may have quoted an accurate account of how far out to sea the lighthouse could be seen, but he was still as ignorant of trigonometry as Dubay. The 79 feet of elevation required to see the Dunkirk Light on a spherical Earth is absolutely consistent with the elevation we could expect for look outs stationed on the main mast. The ordinary calculation shows that it ought to be 190 feet below the horizon." The Dunkerque Light, on the south coast of France, is 194 feet high, and is visible 28 statute miles. Allowing 16 feet for the altitude of the observer. "Many instances could be given of lights being visible at sea for distances which would be utterly impossible upon a globular surface of 25,000 miles in circumference. The relevant paragraphs from the book are: This means that Dubay has made up the 10 foot observer height figure off the top of his head. If we look at the original text from that book we find that no mention is made of the height of the observer.
However as we have learnt, it is always best to fact check Dubay because he likes to make things up.Īs with so many of Dubays "proofs" this is taken from Samuel Rowbotham's "Zetetic Astronomy: Earth Not a Globe" published in 1881. On the face of it that would mean that Dubay's observer would be 69 feet too low to see the lighthouse. Various chapters concern motion of the heavenly bodies, sunrises, sunsets, the tidal movements, and distances of the Sun and Moon from Earth.Using the correct calculation, the observer on the ship would have to be at a height of 79 feet. Most of these are framed with illustrations and diagrams, that the reader understands Rowbotham's notions. Experiments and demonstrations are conducted in support of the Earth being flat, with the astronomical bodies situated above, rather than around it. In 1881 the author expanded and published this book, in part to meet public and scientific scrutiny. Rowbotham was already an inventor and author, and over time theories of Zetetic Astronomy - in which the Earth is flat - became popular. This book began as a pamphlet in the 1840s, explaining the theory with a few sketches alongside. This premium edition contains all of Rowbotham's original graphs, charts and drawings. Samuel Birley Rowbotham advances the Flat Earth theory, which holds that Earth is not in fact an oblate spheroid planet, but an enclosed plane above which the astronomical bodies are situated. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. This work was reproduced from the original artifact, and remains as true to the original work as possible. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. Various chapters concern motion of the heavenly bodies, sunrises, sunsets, the tidal movements, and distances of the Sun and Moon from Earth.
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