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prominence model

03.08.2000

A model of solar prominences has been implemented at the Department of Applied Physics of the California Institute of Technology (USA).

Prominences are plasma - a hot gas of free electrons and positive ions. For a long time it was not known why these emissions of the solar atmosphere take such a variety of forms. It is now believed that the shape, size and speed of prominences (and they sometimes reach the Earth) are determined by the interaction of magnetic fields and electric currents in a conducting plasma.

Physicists have simulated the development of a prominence by passing a current of about 6000 volts and a force of up to 60 kiloamperes through the plasma in a vacuum chamber, simultaneously applying a magnetic field that is several thousand times more intense than the Earth's magnetic field.

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Scientists at the Massachusetts Institute of Technology (MIT) have unveiled a new algorithm that allows a robot to dress people without disturbing them. The device can be used as an assistant for people with limited mobility. The researchers explained that robots have great potential to help people with limited mobility. But this is a difficult task that requires devices to be agile, user safe and fast. Now scientists at MIT have developed an algorithm that achieves this balance.

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