This would be backed up by some programming, to give the droids a basic understanding of rigid body mechanics, and how to construct motion plans.

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The small dog came bounding through the grass, all tight muscles and yap, went for the shed, braked, stuck its head in the door and snarled, small body rigid with excitement.

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The body design includes a rigid-mounted battery frame, which helps provide greater body rigidity compared to a conventional compact car.

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Centre for Economic Policy Research academics, led by David Begg, have suggested that the pact should be made less rigid, with an independent body of experts deciding whether a country's deficit was due to recession or structural factors such as overspending on the pensions system.

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Baba Sa'eed, who has been dancing with his arms and his upper body as he sits by the altar, goes rigid and begins speaking in what he later says was an African dialect, punctuated by phrases in broken Arabic.

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