It could be a couple of years before a dramatically new form factor hits the market for wireless communication, maybe involving wearable devices, and so Samsung and Apple must innovate as best they can on that old rectangular canvas.

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From there we can see dozens of rectangular slabs set into the pavement, marking the burial places of centuries of Florentine families, and along the walls, funerary monuments to some of the greatest names in Italian history, including Dante, Michelangelo, Machiavelli, Galileo and Rossini, which make Santa Croce the Italian equivalent of Paris's Pantheon or London's Westminster Abbey, a shrine to the so-called lay saints of a modern nation-state.

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The track itself is a sequence of closely packed rectangular metal frames, each of which can act as an independent electrical circuit.

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They're lighter, thinner and can even be molded into non-rectangular shapes (this could be helpful as design choices evolve in the coming years).

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The cartons are rectangular and easy to pack, meaning more wine can fit in one container, be it a truck or a ship, with less wasted space.

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Khare's device, a black, rectangular type of supercapacitor just over an inch long, can charge a cell phone battery in 20 to 30 seconds, she said.

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