Word: polese
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Most explanations of that phenomenon liken the sun to a dynamo. Mighty currents of electricity flowing in the solar interior generate magnetic-field lines that, like the earth's, tend to be oriented in a north-south direction. But because the sun, unlike the earth, is gaseous, it does not...
The wrapping and stretching of magnetic-field lines is also believed to be responsible for the spots' appearing progressively closer to the solar equator and the switch of magnetic polarities after each cycle. But ingenious as it seems, the dynamo model of the sun may need some serious revision. Astronomer...
The telltale seismic-wave patterns also suggest that while the sun's outer layer rotates faster at the equator than at the poles, the inner region rotates uniformly. This creates a shear force, like the blades of scissors sliding past each other, that Harvey suspects distorts the magnetic field, giving...
In the tense early-morning hours of June 4, hope died and fear was born. Thousands of combat troops stormed Tiananmen Square, transforming the Woodstock-like encampment of young students calling for democracy into the bloodiest killing ground in Communist China's history. The images of defiance and devastation, the...
As the turmoil spread from Beijing to Shanghai to Guang-zhou to Xian to Chengdu, the shock waves reverberated throughout the Communist world. Publicly the Poles congratulated themselves on the contrast between their political accomplishments and the calamity unfolding in China. But privately many said they feared what they might...