h a l f b a k e r yRecalculations place it at 0.4999.
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Make an "ice rink" but with blocks of graphite, which has a low friction coefficient.
It can be resurfaced as required with a modified Zamboni. When the blocks wear down too much, just replace them. Regular ice skates should work fine.
No need for refrigeration.
wax version
Warm-weather_20_27ice_27_20rink
the whole ball o' wax... [gtoal, Jul 15 2019]
Synthetic Ice
https://en.wikipedi.../wiki/Synthetic_ice
Synthetic ice is a thing and is usually made with high density polyethylene. [tatterdemalion, Jul 18 2019]
Hockey Shot synthetic ice tiles
https://www.hockeyshot.ca
One such manufacturer. [tatterdemalion, Jul 18 2019]
air-sled
https://www.amazon....oving/dp/B00BC2028U
[2 fries shy of a happy meal, Aug 05 2019]
This chick gets me.
https://imgur.com/gallery/ol4d3Tq
[2 fries shy of a happy meal, Aug 10 2019]
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Just got the weirdest visual from that. Black ice, black lighting, glowing sticks puck rink and uniforms in a nausea inducing fluorescent display of hockey Tron. |
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Can we? Can we make it dark, add glowsticks, and some techno and ecstasy? There is absolutely no chance that the edition of razor-sharp footwear and dancing to these elements will result in injury. |
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I'm given to understand, if I recall correctly, that a good deal of the low friction of an ice skate is due to very small scale melting of the ice. |
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{mutters something about 0K and hovering just above the surface} |
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I think I posted something like this a few years ago, except
with wax rather than graphite. And microwaves under the
floor to heat your skate blades to help the wax melt as you
skate over it... yep, linked: |
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A heated Teflon coated rink would enable users to
skate around on frying eggs, or on bacon rind
blades.
[crumb for the graphite] |
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Graphite is very soft, and disintegrates into a fine black powder that gets everywhere. Even a few minutes of working with it gives one the appearance of working in a coal mine. So, you will probably want to provide full face masks and breathing apparatus for your skaters. |
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Available at the skate rental counter for a modest extra charge. |
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I'm not sure if a non-frozen alternative to ice is necessary.
These days, it's possible to by skates that have wheels on. |
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Or even to buy them..... hums contentedly. |
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I see you have mis-read, mon amie. An easy mistake for one
not fully versed in our language. |
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Let me give you another example: "Can one misunderstand
something?" "Yes, it's possible to by careless reading." |
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Actually I think it's you who needs to by a copy of
the
book 'Eats,
Shoots and Leaves'. |
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//it's possible to by careless reading// buy the word, or buy the hour? |
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You can't afford him, ducky. |
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My buyword is "let buygones be buygones". |
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Shut up, [bigs], if you know what's good for you. |
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OK, so we weren't specific about what's underneath thr rink surface. Wr were rather hoping no-one would ask. |
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Another downside of using graphite is that abrasion by the
skates would turn it into PM2.5 carbon dust, which is pretty
nasty to the lungs. |
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Re <links>, polyethylene isn't such a good neutron moderator, unless it's made with C2D4 instead of C2H4 ... |
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Gallium might work instead of graphite. |
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Gallium melts at body temperature and is solid at
room temperature, so it miiiight melt like water ice. |
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Mercury would be interesting; it was used to make near-frictionless self-levelling bearings in lighthouses. |
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That was before the dangers were fully understood of course. Now, GPS is used for marine navigation, and the practice of using lights on towers to lure ships to where the rocks are has been largely abandoned. |
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Ice skates are directionally frictionless. |
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A human-sized air hockey table would be fun, with the small
problem of no way to slow down and no way to steer. |
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A giant tank of mercury, if spun, takes the shape of a
parabolic mirror, and could be used to look at stars (directly
overhead only) when not being used for skating. |
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//A human-sized air hockey table would be fun// |
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Agreed. I use something called an air-sled at work, [link] to move heavy appliances. It's like two elongated miniature air-hockey tables upside down plugged into the outlet of a shop-vac. You can push a full stand-up freezer around a room with your pinky*, so of course at least once per use somebody** has to try riding them without ending up ass over teakettle to become... HoverMan!. |
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*Okay so maybe not 'your' pinky.
**As I usually work alone that somebody is almost always me. |
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// I usually work alone // |
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Still no progress with the, er, "personal hygiene" issue thrn ? |
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The new diet didn't help any ? Or the carbolic baths, or the special Adult Garment with the elasticated apertures and the activated carbon lining ? |
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Could happen... you don't know. |
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Ha ha, [8th] is still using carbon moderation in his pile |
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