« Cebit 2005: First day round-up | Main | Using air to charge cellphones? IIT-Delhi does it! »

March 12, 2005

Invisibility Shields Planned by Engineers

In popular science fiction, the power of invisibility is readily apparent. Star Trek fans, for example, know that the devious Romulans could make their spaceships suddenly disappear.

But is the idea really so implausible? Not according to new findings by scientists who say they have come up with a way to create cloaking device.

Electronic engineers at the University of Pennsylvania in Philadelphia are researching a device they say could make objects "nearly invisible to an observer." The contrivance works by preventing light from bouncing off the surface of an object, causing the object to appear so small it all but disappears.

Continue reading ...

March 12, 2005 in Tech/Science | Permalink


TrackBack URL for this entry:

Listed below are links to weblogs that reference Invisibility Shields Planned by Engineers:


What hapens to the light energy? Does the object heat up? Does the air around the object heat up? Does something 60 degrees away light up with a displaced image of the object (sort of like a sun dog)? You cannot make energy "go away", not even by "cancelling it out" (what, exactly, does that mean?) -- all you can do it transform it to a lower (more probable) form of energy.

******* As for the older notion of camouflage, here is a question I've never seen asked, let alone answered: how does a fish or lizard (or, if you prefer, their topside skin cells) KNOW what the surface it is sitting on looks like? It does not have light receptors on its underside. It does not noticeably inspect the surface it is about to be on (maybe it does, but I'd love an experiment where you put one on a surface that changed after it was resting on it, to see whether the animal changed to match).

Posted by: judith | Mar 12, 2005 11:44:55 AM

The comments to this entry are closed.