What is the thinnest thing in the world?

Answer 1

Pitch Read up on the pitch drop experiment, however glass has been considered a liquid by some as well

Answer 2

There are lots of things that are small from water bears to single celled organisms to plankton so we may never find out

If you're looking for something that you can actually handle with your hands, then graphene is the answer. Graphene is 1 molecule thick and might actually have some uses as a filter. Of course there are thinner things, such as a single electron or a single preon. A preon is what makes up a quark, which makes up a subatomic particle (like a proton, electron, or neutron) then that makes an atom. There will always be something smaller when in this subject of science, but lets just say its graphene.

Answer 3

An Ultra Low-Density Liquid

An ultra low-density liquid, some 1013 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 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."

Answer 4

My guess is that the thinnest liquid is also one that also evaporates the fastest... so maybe some kind of alcohol?

Answer 5

A sheet of paper

Answer 6

Etholin glycol