While the Casimir force is too small to be observed for mirrors that are several metres apart, it can be measured if the mirrors are within microns of each other. For example, two mirrors with an area of 1 cm2 separated by a distance of 1 µm have an attractive Casimir force of about 10-7 N – roughly the weight of a water droplet that is half a millimetre in diameter. Although this force might appear small, at distances below a micrometre the Casimir force becomes the strongest force between two neutral objects. Indeed at separations of 10 nm – about a hundred times the typical size of an atom – the Casimir effect produces the equivalent of 1 atmosphere of pressure.That's a LOT smaller than the Loch Ness Monster....
Still DARPA - the military research geeks - want to Leverage the Casimir Effect
So who knows? Maybe it can be built up to a macro scale? We know that levitation is real - in deep meditation - and so it must be the Casimir Effect on a large scale!!
the Casimir force in nanoscale devices could lead to zero-friction nanomachines with parts that actually levitate ("Quantum levitation by left-handed metamaterials"). It also would havehttp://www.hawking.org.uk/space-and-time-warps.html
We thus have experimental evidence from the bending of light, that space-time is curved, and confirmation from the Casimir effect, that we can warp it in the negative direction. So it might seem possible, that as we advance in science and technology, we might be able to construct a wormhole, or warp space and time in some other way, so as to be able to travel into our past. If this were the case, it would raise a whole host of questions and problems. One of these is, if sometime in the future, we learn to travel in time, why hasn't someone come back from the future, to tell us how to do it.
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