Talk:Invisibility

Moving here because it is speculative:

An alternative for true transparency, also fictional but perhaps a little closer to realizability, is a system of sensors and displays on the outside of the cloak etc. such that light arriving at a sensor from a particular direction is reproduced at the other side of the body, at the corresponding position, and emitted onward in the same direction. For an observer this would be equivalent to transparency.

Covering the head with the same 'clothing' this would also allow the head to become invisible, while the invisible person can still see (retinas absorbing light would conflict with true transparency).

It's part of sci-fi in the same way that magic potions are part of fantasy. -Martin

Then cite specific examples. --Eloquence

Deleted the following because (a) it's a dictionary definition and (b) it's untrue:

Invisibility is used colloquially (though inaccurately) to mean camouflaged or well-hidden. For example The paras are so well trained that they can remain invisible until they are within twenty feet of the target.

I say it's untrue because of the word inaccurately. If someone's camouflaged so well that you can't see him, then he is invisible. Heron

Could the image from CNN's site be used under 'fair use'?