- published: 13 Feb 2016
- views: 204236
A gel (coined by 19th-century Scottish chemist Thomas Graham, by clipping from gelatine) is a solid, jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady-state. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinking within the fluid that give a gel its structure (hardness) and contribute to the adhesive stick (tack). In this way gels are a dispersion of molecules of a liquid within a solid in which the solid is the continuous phase and the liquid is the discontinuous phase.
Gel: Nonfluid colloidal network or polymer network that is expanded throughout its whole volume by a fluid.
Note 1: A gel has a finite, usually rather small, yield stress.
Note 2: A gel can contain:
Note 3: Corrected from ref., where the definition is via the property identified in Note 1 (above) rather than of the structural characteristics that describe a gel.
Dear God it's me transmittin' from
This tiny place I live in Harlem
Oh heaven we have a problem
Cuz we lost all correspondence
And there's no more prophets
They've all been replaced with politics
And they have your people hostage
That's why I'm sending you this postage
If you're listening Mr. UFO man
Speak to Jesus tell him we're on earth and
Things are worse than they have ever been now
Father, it's urgent we need u
Come down
Hey now
You're my father
And I don't know what's out there
So many of us are scared
Hey now
We got people shooting people
We live in warface
I'm not talking nuclear
I ain't got there yet
Why we got intelligent mouths
on Larry King with religious doubts
While the rabbi and minister fuss
Shit, another one bites the dust
So the yellow red black and white
Send missiles in the dark of night
Probably wanna stop but don't know how
That's why Lord, we really need you now
If you're listening Mr. UFO man
Speak to Jesus tell him we're on earth and
Things are worse than they have ever been now
Father, it's urgent we need u
Come down
People around if you feel our vibe ride
Come on aboard there's enough room inside
We're flying high where heaven hides
Hope I see you on the other side
If you're listening Mr. UFO man
Speak to Jesus tell him we're on earth and
Things are worse than they have ever been now
Father, it's urgent we need u
Come down
Why we got intelligent mouths (intelligent mouths)
on Larry King with religious doubts
While the rabbi and minister fuss (while they got fuss)
Shit, another one bites the dust (another one bites the dust)
So the yellow red black and white
Send missiles in the dark of night
Probably wanna stop but don't know how
That's why Lord, we really need you now
God we need you now
If you listen Mr. UFO man
Speak to Jesus
Tell Him we're down on earth
People around if you feel our vibe ride
Come on aboard there's enough room inside
We're flying high where heaven hides