h a l f b a k e r y"Not baked goods, Professor; baked bads!" -- The Tick
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
browse anonymously,
or get an account
and write.
register,
|
|
|
A pond in the middle of a mall or public area suspended
by
air
jets.
You'd see this big, undulating body of water just floating
in
air 3
or 4 feet above the ground. It could move around,
dance,
form
rudimentary shapes, basically do this continually moving
water
blob ballet.
It
would have to be contained by a wall of air that would
keep
the water in the display area as the thing would be more
a
cloud
of droplets than a body of water getting stirred up by
the air
blasts so maybe "Dancing Cloud" would be a better name.
Might be kinda loud though.
ADDENDUM: Include alternative methods proposed by
other bakers on how to do this that are more interesting
than my air suspended concept.
Inspired by
Upside-Down_20Fountain
[doctorremulac3, Oct 19 2017]
Floating Gardens
Floating_20Gardens
[theircompetitor, Oct 19 2017]
Magnetic fluids?
https://en.wikipedia.org/wiki/Ferrofluid
ferrofluid or ferromagnetic fluid [Skewed, Jul 30 2020]
Levitating Magnetic Fluid
https://www.youtube...watch?v=bYGQu-LHSNE
[Skewed, Jul 30 2020]
Now in colours other than black
https://www.youtube...sZK1g&start_radio=1
[Skewed, Jul 30 2020]
Right next to the Romantic Hovering Souffle Restaurant
Romantic_20Hovering...ffl_e9_20Restaurant
[hippo, Jul 31 2020]
Levitating frog
https://www.youtube...watch?v=KlJsVqc0ywM
They used magnets [Skewed, Aug 02 2020]
Magnetic Levitation.
https://en.wikipedi...Magnetic_levitation
Can be used to levitate ordinary water. [Skewed, Aug 02 2020]
Do enormous magnets effect the human body?
https://www.nytimes...the-human-body.html
The New York Times [Skewed, Aug 02 2020]
How strong would a magnetic field have to be to kill you?
https://www.quora.c...e-to-be-to-kill-you
Answers to this Quora question give some other insight [Skewed, Aug 02 2020]
100-tesla pulsed magnetic field achieved
https://www.science...08/110823134929.htm
A 2011 ScienceDaily article [Skewed, Aug 02 2020]
Diamagnetism: How to Levitate a Frog
https://www.youtube...watch?v=ZLkP6S6mKsY
Hmm gonna need a lot of power it seems. [Skewed, Aug 02 2020]
Go to 3:40
https://www.youtube...watch?v=YxhRActz2Qo
Might look something like this. [doctorremulac3, Jan 09 2023]
Please log in.
If you're not logged in,
you can see what this page
looks like, but you will
not be able to add anything.
Annotation:
|
| |
this might work - for demodices. |
|
| |
From the "inspiration":
//Suspended fountain, powerful sheets of jetted air keep a volume of water perpetually spinning and travelling through mid-air as though spilling down an invisible water-slide.
— 2 fries shy of a happy meal, Oct 22 2017// |
|
| |
Have you considered magnetic fluids <linky> as an
alternative to
your noisy air blasts? |
|
| |
Now, if we could find some clear (or relatively clear)
magnetic
substance to make our nanoparticles from & could use
Perfluorohexane or something equally breathable as the
fluid
base then that would really be just about perfect. |
|
| |
A levitating
pool of fluid we can both swim & breath in that looks like
water. |
|
| |
Don't think it's viscous enough though? |
|
| |
All the fluids I've
seen used for this are oils. |
|
| |
Would heavy water be more viscous than regular water? |
|
| |
I was thinking that would be super loud. Then I got to your last statement and now I don't know whether the loudness thought was injected into my subconscious mind through the corner of my eye or whether it was an original thought. For causing me this pain I am awarding a fishbone despite the fact that I like the idea. |
|
| |
// Would heavy water be more viscous than regular water?
// |
|
| |
Sure, but dunno if it's viscous enough. |
|
| |
If it is we need bigger magnets, cos it's heavy. |
|
| |
Downside
is it's kinda
poisonous in large concentrations. |
|
| |
Maybe put the thing in a sound deadening glass
enclosure? |
|
| |
What would be basically a wind tunnel holding this
thing up would have to be very controlled to keep
it from just turning into spray. You'd test the
premise by taking a cup of water with nozzles
spraying from different angles such that you had a
suspended, non-atomized ball of water floating in
air, then you'd expand on that till you had the
floating pond. |
|
| |
I think you'd need many thousands of nozzles
basically actively "steering" the water into a pond
shape. Might be easier to make it a spinning
maelstrom rather than a static pond, which could
be cool too. |
|
| |
How would this do anything other than just spray water everywhere? |
|
| |
Well if you're going to use glass enclosures we can just use
water in a giant glass bowl. |
|
| |
& suspend it by maglev with a few strategically placed
metal inserts. |
|
| |
Or just dangle it from a big crane. |
|
| |
In those "indoor sky-diving" facilities, I've seen pictures of
substantial bodies of water being held up by a jet of air -
but those bodies of water were held together by a lot of
human skin and other tissue. |
|
| |
Absent the skin, I suspect your problem's going to be that
the water molecules can slip through the gaps between the
air molecules, however hard you push those air molecules at
them. However, I wonder whether something can be done
with surface tension to overcome this. |
|
| |
Could use something of a more Jello like
consistency as long as it LOOKS like water. I don't
think anybody would say "Hey, that's too viscous!",
they'd just say "Hmm. Floating water thing.", take
a
bite of their pizza and continue shopping in the
mall. |
|
| |
Even with that you'd have to create a cocoon of air
to mold the
water (or jello) into shape. Blast of air + water =
mist, but
that being said, use enough air nozzles and you
might be able to corral these droplets into one
contained area. Having it not move like a pond
might not be possible but having some kind of
floating whirlpool might. |
|
| |
Certainly on one plane you could keep the water
from moving through that plane with a high
pressure "sheet" of air. Could you then do it on
other planes and angles? Could some amount of
water be constrained above a horizontal plane
with a strong enough sheet of air? That's the
hardest part. If you could do that then you'd only
have to work on constraining the sides with
perhaps a pinwheel configuration of other air
nozzles to shape the sides. |
|
| |
Dunno. Be interesting to try. |
|
| |
Have you considered a scaled-up silicone implant bag? |
|
| |
I can honestly say, in my entire life, I have never
considered
a scaled-up, floating silicon implant bag suspended pond
simulation.
LOL. |
|
| |
I'm putting that at the top of the feasibility list. THAT
would
achieve the desired result. Silicon is needlessly heavy
though. Liquid hydrogen would pose more problems than
it
would solve. Water in a suitably clear and strong plastic
bag
is probably the best way to get the desired result unless
something better comes up. |
|
| |
Does it have to be a liquid? A sea of tiny silvery Bernoulli'd table tennis balls. |
|
| |
Might not look like a pond but could look cool.
Cover them with something sparkly maybe. |
|
| |
If you stayed with the bag, kept water in it (not silicone),
and left the top open, then you could still feed the goldfish. |
|
| |
You were going to feed the goldfish, weren't you? |
|
| |
The interesting challenge then would be to keep the shape
slightly dynamic (with the air jets making "waves" on the
under-surface) without spilling it everywhere. |
|
| |
I think if you did the bag thing you might be able to have
an open top. The bag would keep the water from
atomizing, so sure. Not sure the goldfish would be
particularly happy but hard to judge the mood of a
goldfish anyway. |
|
| |
As far as retaining some kind of shape, although optical
sensors looking at the
surface of what was being suspended might work,
adjusting the air blast as the target moved, it would be
pretty complicated. The static sheets and columns of air
would probably be better to try first. |
|
| |
//You were going to feed the goldfish, weren't
you?// |
|
| |
Wonder if there's a way to just suspend the goldfish.
While keeping them alive I mean. I'm gonna saaaayyyy no.
Interesting challenge though. |
|
| |
I missed this or I would have bunned it for the title alone. It
and its sister "Floating Lake". |
|
| |
// Wonder if there's a way to just suspend the goldfish // |
|
| |
Oh that's easy, if we can do it with a frog <link> we can do it
with a
goldfish. |
|
| |
That had me checking out how they did it & why it works. |
|
| |
"As water is predominantly diamagnetic, this technique has
been used to levitate water droplets and even live animals"
<link> |
|
| |
So with big enough magnets we can levitate ordinary water
& don't need any special magnetic fluids. |
|
| |
Try magnets instead of air blasts. |
|
| |
There's an idea. And with that much magnetic force I'm
assuming this would be an order of magnitude more
hazardous than an MRI machine too. The idea of an art
exhibit with lots of danger / warning signs around it is
appealing. Bun for that alone. |
|
| |
If we could bun annotations, which has been often
suggested. |
|
| |
Seems you can get pretty strong with no real problems. |
|
| |
That frog was alive before during & after its levitation &
they were talking about it being possible to levitate people
that way in the clip as well. |
|
| |
So we're probably good until we start approaching magnetic
power levels strong enough to start atomising stuff which
from a cursory spin through the subject is going to be well
above what we need it seems? <3 links> |
|
| |
It does seem to
have some effect on vision & heartbeats. |
|
| |
But not lethally
so, apparently. |
|
| |
If you have a pacemaker all bets are probably off. |
|
| |
Gonna need a lot of power it seems <link> |
|
| |
A lot of writhing, moaning people stuck to the mechanics, might just be the artistic flourish this levitation installation needs. |
|
| |
//A lot of writhing, moaning people stuck to the mechanics// Isn't that just a concise definition of the internet? |
|
| |
// people stuck to the mechanics, might just be the artistic
flourish this levitation installation needs // |
|
| |
That's not how Diamagnetism works, which is what we'd be
using, & that repels water (the bulk of any humans body
mass) regardless of which pole of the magnet is pointed at it. |
|
| |
You're thinking of Ferromagnetism which is
different. |
|
| |
According to the last link I posted you'd need a 'slightly
weaker'
than 45-Tesla hybrid magnet in the floor of the room you
were
using
& 1 GigaWatt of continuous power consumption to levitate
a
person. |
|
| |
So a more substantial body of water that several
people could swim around in if they wanted would need
more. |
|
| |
Or lots of separate ones of the same power side by side. |
|
| |
You probably need some smaller ones in the walls pointing
in to stop the water flowing off the edges of
the levitation area as well. |
|
| |
[Skewed] Doesn't the material levitated produce the diamagnetism? The super powerful magnets have the standard north and south therefore are able to attract trinkets and implants. |
|
| |
OK, I see where you're coming from
now. |
|
| |
So swimsuits with no metal would be the dress
code, or nudity, a waiver stating you have no implants
would
no doubt
be involved as well. |
|
| |
My apologies for not saying that earlier, I
was assuming a modicum
of common sense, forgot where I was for an instant, my bad
;p |
|
| |
This is the Halfbakery sir. Reading that I was so shocked my
monocle fell into my brandy sniffer and splashed my ascot. |
|
| |
[Skewed] All good. You were actually spot on and my embarrassment forced me to remember the loop hole that metallic objects still weren't allowed near the levitation apparatus. So I did a wiki check. |
|
| |
Found an animation that approximates what this might look like. (link) |
|
| |