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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Non-Mainstream and Controversial Science
the myth of flat earth debunked again
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<blockquote data-quote="Phil G" data-source="post: 77637197" data-attributes="member: 315331"><p>Sorry but many websites such as these disagree with your explanation:</p><p></p><p>"The rays appear to diverge because of perspective effects, like the parallel furrows of freshly ploughed fields or a road wide at your feet yet apparently narrowing with distance."</p><p></p><p>[URL unfurl="true"]https://atoptics.co.uk/blog/crepuscular-rays/[/URL]</p><p></p><p>"Crepuscular rays may appear to fan across the sky, but the rays are really parallel to each other. The sunbeams appear to diverge, much as a road that looks narrow in the distance appears wide beneath your feet."</p><p></p><p>[URL unfurl="true"]https://earthsky.org/earth/crepuscular-rays-sunrays-photos-around-world/[/URL]</p><p></p><p>"The shadows are not quite parallel because, although the sun is ~93 million miles away, it is so large that its globe appears 0.5º across. Rays consequently spread up to 0.25º each side of the mean direction. This causes the 'umbral' or absolutely unlit parts of cloud shadows to narrow slightly with increasing distance from the cloud."</p><p></p><p>[URL unfurl="true"]https://atoptics.co.uk/blog/ray-formation/[/URL]</p><p></p><p>"What you describe is an optical illusion. When the sun shines through gaps in the cloud you will see several parallel rays coming towards you. Because they are coming towards you, they will appear to diverge, just like railway track appear to diverge as they come towards you. But with railway tracks we can see that they are coming towards us, because they are on the the ground. With the parallel rays of sunlight, there are no clues, and we see them as shining down, and so being non-parallel. Its an optical illusion."</p><p></p><p>[URL unfurl="true"]https://astronomy.stackexchange.com/questions/39321/how-do-the-suns-light-rays-come-to-the-world[/URL]</p></blockquote><p></p>
[QUOTE="Phil G, post: 77637197, member: 315331"] Sorry but many websites such as these disagree with your explanation: "The rays appear to diverge because of perspective effects, like the parallel furrows of freshly ploughed fields or a road wide at your feet yet apparently narrowing with distance." [URL unfurl="true"]https://atoptics.co.uk/blog/crepuscular-rays/[/URL] "Crepuscular rays may appear to fan across the sky, but the rays are really parallel to each other. The sunbeams appear to diverge, much as a road that looks narrow in the distance appears wide beneath your feet." [URL unfurl="true"]https://earthsky.org/earth/crepuscular-rays-sunrays-photos-around-world/[/URL] "The shadows are not quite parallel because, although the sun is ~93 million miles away, it is so large that its globe appears 0.5º across. Rays consequently spread up to 0.25º each side of the mean direction. This causes the 'umbral' or absolutely unlit parts of cloud shadows to narrow slightly with increasing distance from the cloud." [URL unfurl="true"]https://atoptics.co.uk/blog/ray-formation/[/URL] "What you describe is an optical illusion. When the sun shines through gaps in the cloud you will see several parallel rays coming towards you. Because they are coming towards you, they will appear to diverge, just like railway track appear to diverge as they come towards you. But with railway tracks we can see that they are coming towards us, because they are on the the ground. With the parallel rays of sunlight, there are no clues, and we see them as shining down, and so being non-parallel. Its an optical illusion." [URL unfurl="true"]https://astronomy.stackexchange.com/questions/39321/how-do-the-suns-light-rays-come-to-the-world[/URL] [/QUOTE]
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the myth of flat earth debunked again
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