The heat equation or diffusion equation is an important partial differential equation which describes the temperature in a given region over time. It is:
<math>u_t = k ( u_{xx} + u_{yy} + u_{zz} )</math>
Solutions will typically "even out" over time. The number k describes the heat conductivity[?] of the material.
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... and was admitted to the religious profession on October 7, 1860. Three years later he was sent to Hawaii, where he was ordained on May 24, 1864. On May 10, 1873, at ...