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Gliese 581g - A Tidally Locked DnD World
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<blockquote data-quote="Xeviat" data-source="post: 5347387" data-attributes="member: 57494"><p>Just wanted to point out that movement is relative to stationary space. You may not feel that the earth is wizzing around the sun as fast as it is, but it is. You may not feel that it is spinning, but it is. 581g is rotating every 37 days; it's tidally locked, but there will still be a centrifugal effect.</p><p> </p><p>For example (an example from a Physics book), if you spin a bucket full of water, you create a whirlpool in the bucket. If you suddenly stop the spinning, the water continues for some time; force has been imparted into it, and it takes it a bit longer to lose this. This spinning is in relation to space, not the objects around it. Otherwise, you would get the same spinning force if you spun the room around the bucket of water. I may be remembering the analogy incorrectly, but my point is that just because the planet isn't spinning in relation to the star doesn't mean it isn't spinning. Venus is nearly tide locked but it spins enough that its atmosphere super rotates.</p><p> </p><p>I had an article that explored the coreolis effect on slowly rotating bodies; I cannot find it again since I do not know what google-fu lead me there, but it did show that even an object rotating every 365 days (a tidally locked Earth for example) would have centrifugal force suitable to create some sort of magnetic field.</p><p> </p><p>As for the issue of flare stars, for a setting I'm going to assume that my world began to evolve after the star's flare stage was over, or that the star was more stable. Red Dwarfs live far longer than Yellows, so the world has plenty more time to evolve.</p></blockquote><p></p>
[QUOTE="Xeviat, post: 5347387, member: 57494"] Just wanted to point out that movement is relative to stationary space. You may not feel that the earth is wizzing around the sun as fast as it is, but it is. You may not feel that it is spinning, but it is. 581g is rotating every 37 days; it's tidally locked, but there will still be a centrifugal effect. For example (an example from a Physics book), if you spin a bucket full of water, you create a whirlpool in the bucket. If you suddenly stop the spinning, the water continues for some time; force has been imparted into it, and it takes it a bit longer to lose this. This spinning is in relation to space, not the objects around it. Otherwise, you would get the same spinning force if you spun the room around the bucket of water. I may be remembering the analogy incorrectly, but my point is that just because the planet isn't spinning in relation to the star doesn't mean it isn't spinning. Venus is nearly tide locked but it spins enough that its atmosphere super rotates. I had an article that explored the coreolis effect on slowly rotating bodies; I cannot find it again since I do not know what google-fu lead me there, but it did show that even an object rotating every 365 days (a tidally locked Earth for example) would have centrifugal force suitable to create some sort of magnetic field. As for the issue of flare stars, for a setting I'm going to assume that my world began to evolve after the star's flare stage was over, or that the star was more stable. Red Dwarfs live far longer than Yellows, so the world has plenty more time to evolve. [/QUOTE]
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Gliese 581g - A Tidally Locked DnD World
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