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Figure B.7. Baseball coils [Post, 1987].

"Coil current

Figure B.7. Baseball coils [Post, 1987].

transport: radial particle drifts are produced that cause increased transport losses either by collisions, as in closed toroidal magnetic configurations, or by resonant processes.

Small-scale instabilities can also be generated by anisotropies in velocity space and in particular in the loss-cone. These instabilities have been shown to be much less deleterious than theoretically predicted, provided a warm plasma is injected into the mirror, and will not be considered further (see [Post, 1987] for a discussion of the various micro-instabilities in mirrors).

To overcome all these problems, advanced mirror concepts have been proposed; they are briefly reviewed in the rest of this section.

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Baseball For Boys

Baseball For Boys

Since World War II, there has been a tremendous change in the makeup and direction of kid baseball, as it is called. Adults, showing an unprecedented interest in the activity, have initiated and developed programs in thousands of towns across the United States programs that providebr wholesome recreation for millions of youngsters and are often a source of pride and joy to the community in which they exist.

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