Here are three extra dimensions to the slugfest between Samsung , Apple and Google .
Introducing extra dimensions to account for gravity's weakness may sound loopy, but there is a good precedent.
Another is that too many extra dimensions are involved (the more there are, the smaller the loops will be).
Beyond Higgs the ATLAS experiment will now be looking for evidence of dark matter in the universe and extra dimensions of space.
But gravitational strings have no sticky ends and can wander freely off into Dr Arkani-Hamed's extra dimensions, where they have no effect on matter stuck to the membranes of the observable universe.
On the other hand, the good news for physicists is that, if the theory is correct, the loops formed by these extra dimensions, unlike those of standard string theory, will be relatively large.
The bad news is that the papers by Dr Sundrum and Dr Randall suggest that a consequence of all this is that the extra dimensions into which gravity is wandering might be infinitely large.
What makes Dr Burgess's proposal unusual is that he went out on a limb and suggested that these energy-sapping, curled-up extra dimensions should be as big as a few microns across, gargantuan by string-theory standards.
Extra dimensions are of interest because string theory, a class of mathematical models based on quantum theory that seeks to describe reality in the most fundamental way, requires that there be at least six of them, maybe more.
Unlike the familiar three of length, breadth and height, these extra dimensions are curled up so tightly that they elude detection (though scientists are trying to prise them open in particle accelerators like the Large Hadron Collider near Geneva).
Experiments currently being undertaken at Stanford, and also by John Price, a physicist at the University of Colorado, will measure the force of gravity over a distance of less than a millimetre (the size of loop expected if there are only two extra gravity-swallowing dimensions).
Since many HD films are shot with a 16:9 aspect ratio, the unit's extra-wide LCD is constructed with the same dimensions.
These little wonders come in two basic flavors, palm-size machines with the dimensions of a small stack of index cards and hand-held computers roughly the size of an extra-long paperback.
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