h a l f b a k e r y"More like a cross between an onion, a golf ball, and a roman multi-tiered arched aquaduct."
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See link. You blow air into sand and it acts like a liquid. So this
track is equipped with these air blowers to turn the track into
liquid at any moment forcing the runners to become swimmers.
When the air is turned off, they're now buried in sand and have
to pull themselves out and become runners
again.
They might also be able to carry a boogie board and paddle and
ski on it but not sure about that.
No matter what you think of the idea you really have to watch
the video. It's pretty much the most incredible thing I've ever
seen. (Thanks Rayford Steele)
Turning solid sand into "liquid".
https://www.youtube...watch?v=My4RA5I0FKs
[doctorremulac3, Feb 08 2022]
[link]
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Addendum: The concept could be used for a
wrestling ring too. |
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//wrestling ring//
Expert level: the ring/tank is 3m deep. Hold your breath, dig
out fast!
I always wondered if you can get the air flow *just right* to
allow swimming/"floating", or is it always sink-to-the-bottom
(humans being denser than air...)? |
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// can get the air flow *just right* to allow
swimming/"floating" // Yes, as demonstrated in the video,
it's possible to do it in your back yard. Time stamp 8:20
shows a kid floating on his back. He starts low, then floats
higher in the video. Also note the basketball floating very
well, and listen to Mark's explanation of buoyancy. |
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// humans being denser than air // but much less dense
than the air/sand mixture you get by blowing air through
sand at a reasonable rate. If you blast the air hard enough,
yes you will turn the sand into a sandstorm, and you can
fall through it, but in Mark's hot tub, the surface level of
the sand did not increase noticeably when the air was
turned on, so the density of the air/sand mixture was only
slightly less than the density of the sand when the air was
turned off. |
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Thanks, [scad mientist]. I (obviously) wasn't paying attention
(& I had the sound off...). |
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I think I like the wrestling ring better. That's something that
might actually happen. |
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You know, the ring thing with a rotating liquid part would be interesting. I think there was a Star Trek episode where the combatants had to jump around a moving base while fighting. |
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I take it Fremen sand compactors are banned? |
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Yea, might be okay for the horror movie version though. |
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