Word: diagramming
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Dates: during 1960-1969
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...into a spherical reaction chamber, the compact mass becomes critical. A nuclear chain reaction starts, and heats the solution. Before the reaction goes too far, the solution is sucked away by pumps and forced through a heat exchanger, where it heats ordinary water to produce high-pressure steam (see diagram), which in turn can be harnessed to an electric generator. Since the fuel is liquid, it can be renewed by periodically passing it through a special purifier...