You can read about the details in The Origin of Terry Pratchett's Discworld. Even continents and oceans on the same scale as on rocket motors) to keep it in place, like a Segway. It is built structure larger than a planet: a ring around a star. It's hard to be a female science fiction fan sometimes. The original makers of the Ringworld are no longer around, and the inhabitants are at various levels of progress. The spaceport designers provided a magnetic linear accelerator consisting of a sequence of mag-lev hoops. In the Ringworld, on the other hand, the star attracts all parts of the ring equally, so the net gravitational force is zero. Some way is needed to make it dark so that the residents can sleep and also presumably so that they don't expire of heat stroke. They also use 'port' and 'starboard', borrowed from the nautical world, for the left and right directions when facing spinward. The resulting structure will have much in common with a Ringworld, but will not have been build all in one shot, but added onto and accreted over many thousands of years, inhabited and viable at every step of the way. Can you imagine the energy needed to pull all of the mass of Jupiter out of it's own gravity well? Large planets, "gas giants" - are often mostly hydrogen gas - and that's not a very good building material. Time to run some numbers and see just how much a heckuvalotavit really is. There would be no horizon, because the surface curves the opposite direction to on Earth. alien traders reached the Humans first, thus giving them a hyper drive that enabled them to win the first man-Kzin war & preventing the human race being enslaved by the Kzin. Now, the strength we need to hold it up is compressional, rather than tensional. leaves each segment still three times as large in area as planet Earth. I would guess that you pick a star with the materials on hand. But there is enough room for civilisations to be rising, falling, flourishing The approaching spaceship would have to line up exactly with the first hoop. Someone wants a million square miles to set up a polar bear sanctuary? Find out what other deviants think - about anything at all. The Ringworld Engineers (Copyright 1980) The classic sequel to Ringworld, following Louis Wu and Teela Brown as they manipulate events on the Ringworld in an attempt to save it. Just how much mass is in the Ringworld? The Earth orbits around the Sun because of the mutual force of gravity between the two bodies. It may be preferable to build bulkheads across the Ringworld - at right angles to the rim walls. First off, you could pick a smaller and/or less luminous star and build a smaller Ringworld. Louis is upset that she abandoned him (I don't see why, he did it to her first). Pril tells that her people's civilisation fell because a fungus appeared that ate their superconductors. It is just too large. For instance, the floor of the Ringworld would likely not just be a bed of inert scrith, but will also have conduits and access points to distribute the electricity collected by the shadow squares. Smaller again are the halo structures, Ringworlds only about 6,000 miles (9,700km) across, that feature in the Halo series of games for the XBox games console. Wharfinger's Law of Diminishing SF Sequels. Even subterranean transport systems. The apex of the arch would have an apparent width of 1/2 as wide as the sun, it being of the same width but twice as far away. The sun's rays will hit all of the ringworld perpendicularily, whereas on earth they do so only in the tropics. Although we are told about the mechanisms for removing silt from the bottoms of the oceans, we are never told how the soil and rock which are eroded by rivers are replaced - there would have to be something to repair the damage of erosion and prevent large areas of the world being reduced to bare metal. As rivers flow into oceans, they erode the land, carrying soil along and depositing it in the oceans. gravity, it must spin very fast, at aound 1 239 000 m per second (770 miles per second). Instead of distant places being below the horizon, they will be obscured by the haze of millions of miles of atmosphere. "The ring masses two times ten to the thirtieth power in grams, measures .95 times ten to the eighth power miles in radius, and something less than ten to the sixth power miles across. We are privy to his thoughts and observations. At night, however, the rest of the Ringworld would be visible in the sky. We just need to come up with some way of supplementing/replacing the compressional force currently provided by the scrith to balance the centripetal force provided by the Ringworld's rotation.

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