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Thermal gradient also known as zone solidification, zone melting was first developed by William Gardner Pfann  at Bell Labs in the early nineteenth century to prepare high purity materials for manufacturing transistors.
The thermal gradient (Temperature difference between sea surface water and deep sea water) of about 15?
Benefits of the design include uniform heat history and elimination of thermal gradients.
The resulting spatial map allows visualization of thermal gradients, inhomogeneities, and other variations across the surface.
Ocean Thermal Energy Conversion (OTEC) uses the ocean's thermal gradient to drive a heat engine.
Density can be graded by use of different precursors and the application of thermal gradients during molding.
The Air-Cooled Peltier accessories contain builtin magnetic stirring, which helps maintain thermal equilibrium throughout the sample by eliminating thermal gradients within the cuvette.
The University of Navarra in Pamplona, Spain, has installed a thermal gradient greenhouse to study the impact of climate change on plants.