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Wolfman77 said:
On that note however, if the ring were 1,000Km it would need the outside of the ring spinning at 2213m/s to achieve 9.7947m/s^2, approximately 1g. Also 1Km in from the surface would still have approximately 9.756m/s^2, less than 1/2 percent difference.
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Cool! Numbers! Thanks. I wonder how low you could take the (apparent) gravity for people to feel uncomfortable/ suffer ill health effects. I reckon most ppl (particularly the arthritic and the overweight=-) would enjoy bouncing around in .75G. What about half a G? Fine for an afternoon on the bouncy castle, but what about long term?
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Don't ask me how you could get it to stay together at those speeds though.
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Smaller ring and/or settle for lower gravity, I guess. Or use better unobtanium.
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I've also found out that about 4 inches (9cm) of water will block gamma rays, 3ft (1m) will block about 20% UV.
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Wow, is that it? I thought it would be a lot more than that. I wonder if NASA's Mars design will have the water tanks wrapped around the ship to shield the crew from radiation. Are those the only dangerous rads to worry about out there, or would there be others?