Word: gradient
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Dates: during 1930-1939
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...necessitates a separate operation for every depth at which the temperature is obtained. Thus ocean students were excited last week when Professor Carl Gustaf Arvid Rossby, head meteorologist of Massachusetts Institute of Technology, reported that he and two associates had devised an instrument which would record a complete temperature gradient from the surface to a maximum depth...
...solid block of graphite, a form of carbon which conducts electricity well. To set up the resistance he packed the crucible in lampblack-an obstinate conductor of electricity. The current was carried through a copper coil. The outside of the furnace was heat-insulated, and a temperature gradient was established through the heat insulation to a water-cooled inductor coil. This carried the heat away, prevented the outside of the furnace from getting hot and breaking down the charge coil, which had spoiled earlier efforts to maintain high temperatures...