Компьютерная техника. Еремина Н.В. - 35 стр.

     6.5 Home exercise (to be done in writing)
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The Importance of How We Calculate

       1. In some branches of science, progress depends mainly on finding new ways
to calculate, that is to determine the consequences of what we already know in
principle. This is presently the situation in the field of plasma physics, which is used
both to study the conditions inside of stars and to attain controlled nuclear fusion on
the earth.
       2. Plasma is a state of matter in which some of the electrons are permanently
separated from atoms, and both the electrons and the charged atoms roam around
freely. The behavior of plasma is governed by well-known equation that has been
studied in various contexts for many years. However, in the specific context of
plasmas especially when magnetic forces are also present, it is often difficult to
extract from these equations accurate predictions about how the plasma will behave.
       3. Physicists believe that this is a problem in mathematical computation rather
than some flaw in the equations themselves. However, this distinction is small
comfort to those trying to predict the right conditions needed for useful nuclear fusion
to occur.


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