is there a liquid that is as light as air?

[dpopiz]

 

[neutralizer]

If it were less dense than air, how would it be a liquid?

 

[FoBoT]

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

 

[Heisenberg]

I dunno about liquids, but Aerogel has a density almost as low as air.

 

[neutralizer]

Originally posted by: Heisenberg
I dunno about liquids, but Aerogel has a density almost as low as air.

That's only because it is like 90-99.8% air.

 

[Ika]

How about a gas that is heavier than a liquid?

 

[Heisenberg]

Originally posted by: neutralizer

Originally posted by: Heisenberg
I dunno about liquids, but Aerogel has a density almost as low as air.

That's only because it is like 90-99.8% air.

Well sure, but it's still a solid...

 

[Tom]

if there is, it's floating on top of the atmosphere.

 

[randay]

yes, in fact all liquids can be as light as air. even lighter.

 

[Chunkee]

its called puff

 

[Oceandevi]

clouds , water vapor?

define air....

 

[Jeff7]

Well air itself is kind of like a liquid. It still sort of flows and fills the container that is the spherical surface of Earth.

 

[sniperruff]

soquid

 

[mrSHEiK124]

Originally posted by: Jeff7
Well air itself is kind of like a liquid. It still sort of flows and fills the container that is the spherical surface of Earth.

AFAIK, that makes it a fluid.

 

[Tom]

Originally posted by: Jeff7
Well air itself is kind of like a liquid. It still sort of flows and fills the container that is the spherical surface of Earth.

how do spacemen get out of this container you speak of ?

 

[Anubis]

Originally posted by: Tom

Originally posted by: Jeff7
Well air itself is kind of like a liquid. It still sort of flows and fills the container that is the spherical surface of Earth.

how do spacemen get out of this container you speak of ?

spaceship

 

[randay]

Originally posted by: Tom

Originally posted by: Jeff7
Well air itself is kind of like a liquid. It still sort of flows and fills the container that is the spherical surface of Earth.

how do spacemen get out of this container you speak of ?

Why, they swim of course.

 

[DivideBYZero]

Yeah. Wet air.

 

[Whoozyerdaddy]

Yeah, but the important question is... if you put an airplane in it will it take off?

 

[DaShen]

Originally posted by: FoBoT

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

That is Plasma, and yes they have been working on making a stable amount of the stuff.

 

[91TTZ]

What about liquid Mung?

 

[silverpig]

Originally posted by: DaShen

Originally posted by: FoBoT

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

That is Plasma, and yes they have been working on making a stable amount of the stuff.

Uh, that's not plasma...

 

[Ika]

Originally posted by: silverpig

Originally posted by: DaShen

Originally posted by: FoBoT

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

That is Plasma, and yes they have been working on making a stable amount of the stuff.

Uh, that's not plasma...

I'm pretty sure Bose-Einstein is the fifth state. While plasma is really really hot, I think BE is really really cold.

 

[AStar617]

Originally posted by: FoBoT

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

This made me LOL

 

[silverpig]

Originally posted by: Aflac

Originally posted by: silverpig

Originally posted by: DaShen

Originally posted by: FoBoT

An Ultra Low-Density Liquid

An ultra low-density liquid, some 10^13 times thinner than water, might form inside Bose-Einstein condensates under the action of the "Efimov effect," a quantum phenomenon in which the atoms in the cloud attract each other when considered two at a time but repel each other when considered three at a time. In such an Efimov cloud the atoms would be some 20 times farther apart that in a BEC, which is itself pretty sparse---a million times thinner than air. And yet this new type of condensate would not be a gas but a liquid!

According to Aurel Bulgac of the University of Washington (bulgac@phys.washington.edu, 206-685-2988), the exquisite coordination of atoms in an Efimov condensation would allow it to be self-bound (the constraining magnetic fields used to keep a BEC from drifting apart would be unnecessary); moreover, it would be neither compressible nor dilutable. This extraordinary quantum liquid---the smallest density condensed matter system yet proposed---could probably only be formed at much colder temperatures than are now available in BEC experiments. Bulgac proposes that Efimov droplets made from boson atoms be called "boselets." The fermion version would be "fermilets." (Aurel Bulgac, Physical Review Letters, 29 July 2002.)

http://www.aip.org/pnu/2002/split/599-1.html

i have no idea

That is Plasma, and yes they have been working on making a stable amount of the stuff.

Uh, that's not plasma...

I'm pretty sure Bose-Einstein is the fifth state. While plasma is really really hot, I think BE is really really cold.

States of matter aren't numbered

A plasma is an ionized gas.

BEC occurs when a system of bosons cools and their wavefunctions collapse together. All the particles in the system are in the same state, and you can think of a BEC almost as one giant particle. And yes, this happens at very low temperatures (nanoKelvin usually)

There are many other states of matter too... gluon-quark plasmas, neutron stars... There are also phase transitions that are associated with things we don't normally call states of matter. An example is the phase transition between a metal-state and an insulator-state of a 2d electron gas.