There are a couple of things that I wonder about the T-1000. Well the first is ofcourse how does it see...we are able to view how Arnie and The T-X sees.
The second thing I wonder is how long would a T-1000 last. I recall in T2 when John asked the T-800 how long does it live and last. The last is if the T-1000 was sucessful in killing John, who it terminate itself?
Oh yes I have to say that Kristina Lokken will no way be the better villian That Robert Patrick was in T2.
While not explained in T2, the T1000 is most probably a swarm of microscopic nanorobots. Each unit is built at the cellular level and is fully capable of limited autonomous action, thus when he is blasted apart by the T800's shotgun, the small pieces are smart enough to reform back into the main whole.
Now there are two possibilities. One is that the T1000 actually has dedicated "cells" and systems just like us. The other is that all of his cells are capable of being any type of cell necessary. The second one is most probably the case. This is because, one it is more plausible, two it allows cells to be optimized for specific tasks rather then forced to do a bunch of tasks horribly, and three the movie supports this.
The T1000 could probably form functional "eyes" anywhere on his body though for whatever reason he does this where a normal human's eyes would be. This is evident as the T800 sneaks up behind the T1000 and slashes at him with a steel rod. If the T1000 had omnidirectional vision, he could have dodged the blow. Also when the Terminator throws the T1000 into a wall, he reforms backwards before fighting the Terminator. This again indicates that he indeed can only see where his "eyes" are.
Most probably he does have other sensors, his hands for example seem to be very sensative as indicated when he searches John's room.
My major question about the T-1000 is: The T-800 explained that the T-1000 can take the form of anything that it samples through physical contact; but then how does it manage to form a complete three-dimensional copy of something that it merely touches in one spot. Vision could play a large part in this, but you still have to factor in the parts of the object that it can't see. For example, when it takes the form of the security guard at the coffee machine, the only contact it makes with the guard is through the guard's shoe. However, he then proceeds to form into an exact copy of the whole guard. Do you see what I'm saying? In order for it to form into a complete three dimensional copy, wouldn't it have to completely envelope the target in order to know its full shape?
Since we are on the subject of this particular scene involving the T-1000, here is a pic.
Small clip HERE
the t 1000 isnt nanobots, someone wrote a big essay on a site about it being a massive amount of them with a single "mind". but there was a site that had official stuff on every model of terminator. it doesnt exist now but it was www.eterminator.com. it was a liquid and is pressed into its human shaped form, so its natural state is humanoid. i completley forget how it worked but i know it wasnt nanobots. even the t-800 says its a poly-alloy.
i think the 1000 is more advanced than the x, but lacks its weaponry. the major benifit, besides a massive resistance to injury, was its shape shifting ability so you never knew who it was. the x is kind of a combination of the 800 and the 1000. its far more advanced than an 800 but has the morphing ability of the 1000. the thing that would make that very useful is its ability to have onboard weapons, something the 1000 model couldnt. so for time travel to a new environment where guns may be hard to come by the t always has a projectile weapon. i think the 1000 is more advanced than an x, but the benifits of a downgrade in tech make it good for going to new locations where standard weapons can be destroyed or depleted.
here is a link to a site that has alot of cool info, but its mostly made up and assumed from what glimpses we have of the terminator universe. http://www.goingfaster.com/term2029/contents.html