Three-dimensional object always rotates around an imaginary line called a rotation axis.
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Along the rotation axis were three long cylindrical chambers six hundred metres wide.
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Right in the centre of the grid, aligned along the rotation axis, was the arkship's spaceport.
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Small chemical rockets flared around its edges, brilliant sulphur-yellow flames pushing the ship in towards the rotation axis.
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Based on a multi-image calibration method, an algorithm to extract the rotation axis of a turn-table has been developed.
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Because the major dust jet remained fixed in orientation, it is evidently aligned near the rotation axis of the nucleus.
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The H atoms of the axially bonded water mol-ecule are incompatible with the fourfold rotation axis and are disordered over two sites.
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Basically, the moment of inertia is a property of an object that depends on the distribution of the mass about the rotation axis.
8
His inertial guidance display showed him it was inclined slightly, heading away from the rotation axis, though there was still no appreciable gravity.
9
It will carry a robotic arm and two black-and-white cameras as well as instruments to measure Martian seismic activity and the planet's rotation axis.