A copy of the book “The Lighthouses of the World” and a calculator are enough to prove that the Earth is not a globe, but an extended flat plane. The distance from which various lighthouse lights around the world are visible at sea far exceeds what could be found on a globe Earth 25,000 miles in circumference. For example, the Dunkerque Light in southern France at an altitude of 194 feet is visible from 28 miles away. Spherical trigonometry dictates that if the Earth was a globe with the given curvature of 8 inches per mile squared, this light should be hidden 190 feet below the horizon!
The Egerö Light in Norway is 154 feet above high-water and visible from 28 statute miles where it should be 230 feet below the horizon. The Light at Madras, on the Esplanade, is 132 feet high and visible from 28 miles away, where it should be 250 feet below the line of sight. The Cordonan Light on the west coast of France is 207 feet high and visible from 31 miles away, putting it 280 feet below the line of sight. The light at Cape Bonavista, Newfoundland is 150 feet above sea-level and visible at 35 miles, where it should be 491 feet below the horizon. And the lighthouse steeple of St. Botolph’s Parish Church in Boston is 290 feet tall and visible from over 40 miles away, where it should be hidden a full 800 feet below the horizon!
The Lighthouse on Holyhead Pier shows a red light at an elevation of 44 feet above high water; and the Poolbeg Lighthouse exhibits two bright lights at an altitude of 68 feet; so that a vessel in the middle of the Channel would be 30 miles from each light; and allowing the observer to be on deck, and 24 feet above the water, the horizon on a globe would be 6 miles away. Deducting 6 miles from 30, the distance from the horizon to Holyhead, on the one hand, and to Dublin Bay on the other, would be 24 miles. The square of 24, multiplied by 8 inches, shows a declination of 384 feet. The altitude of the lights in Poolbeg Lighthouse is 68 feet; and of the red light on Holyhead Pier, 44 feet. Hence, if the earth were a globe, the former would always be 316 feet and the latter 340 feet below the horizon!” -Dr. Samuel Rowbotham, “Zetetic Astronomy, Earth Not a Globe!” (59)
-William Carpenter, “100 Proofs the Earth is Not a Globe” (5)
The Cape L’Agulhas lighthouse in South Africa is 33 feet high, 238 feet above sea level, and can be seen for over 50 miles. If the world was a globe, this light would fall 1,400 feet below an observer’s line of sight! The Statue of Liberty in New York stands 326 feet above sea level and on a clear day can be seen as far as 60 miles away. If the Earth was a globe, that would put Lady Liberty at an impossible 2,074 feet below the horizon! The lighthouse at Port Said, Egypt, at an elevation of only 60 feet has been seen an astonishing 58 miles away, where, according to modern astronomy it should be 2,182 feet below the line of sight!
“The distance at which lights can be seen at sea entirely disposes of the idea that we are living on a huge ball.” -Thomas Winship, “Zetetic Cosmogeny” (58)
With the aid of a telescope, ships can be distinguished on the horizon and captains declare they can see the cathedral spire from an amazing 150 miles away. If the Earth were a globe, however, at that distance the spire should be an entire mile, 5,280 feet below the horizon!
“In the account of the trigonometrical operations in France, by M. M. Biot and Arago, it is stated that the light of a powerful lamp, with good reflectors, was placed on a rocky summit, in Spain, called Desierto las Palmas, and was distinctly seen from Camprey, on the Island of Iviza. The elevation of the two points was nearly the same, and the distance between them nearly 100 miles. If the earth is a globe, the light on the rock in Spain would have been more than 6600 feet, or nearly one mile and a quarter, below the line of sight.” -Dr. Samuel Rowbotham, “Zetetic Astronomy, Earth Not a Globe!” (59)
The instruments were placed at the same altitude above sea-level and shined across 108 miles of St. George’s Channel. Technical problems plagued Portlock’s experiment for weeks, until finally one successful morning he wrote: “For five weeks I watched in vain; when, to my joy, the heliostat blazed out in the early beams of the rising sun, and continued visible as a bright star the whole day.” If the world were a globe, Portlock’s light should have remained forever invisible hidden under approximately a mile and a half of Earth’s curvature!
“If we take a journey down the Chesapeake Bay, by night, we shall see the ‘light’ exhibited at Sharpe's Island for an hour before the steamer gets to it. We may take up a position on the deck so that the rail of the vessel's side will be in a line with the ‘light’ and in the line of sight; and we shall find that in the whole journey the light won't vary in the slightest degree in its apparent elevation. But, say that a distance of thirteen miles has been traversed, the astronomers' theory of ‘curvature’ demands a difference (one way or the other!) in the apparent elevation of the light, of 112 feet 8 inches! Since, however, there is not a difference of 100 hair's breadths, we have a plain proof that the water of the Chesapeake Bay is not curved, which is a proof that the Earth is not a globe.” -William Carpenter, “100 Proofs the Earth is Not a Globe” (36)
“We are fairly entitled to conclude, therefore, from the reliable data furnished as to how far lights at sea can be seen, that the world is an extended plane, and not the globe of astronomical speculation.” -Thomas Winship, “Zetetic Cosmogeny” (62)