Planet When subsequent planets were discovered in the 18th and 19th centuries, the naming practice was retained with "Neptūnus" (Poseidon). Uranus is unique in that it is named for a Greek deity rather than his Roman counterpart. Some Romans, following a belief possibly originating in Mesopotamia but developed in Hellenistic Egypt, believed that the seven gods after whom the planets were named took hourly shifts in looking after affairs on Earth. The order of shifts went Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon (from the farthest to the closest planet). Therefore, the first day was started by Saturn (1st hour), second
Closest point method surrounding the surface for efficient computational purposes. formula_13 where formula_14 is the bandwidth. Using initial profile formula_15 leads to the solution formula_16 for the heat equation. Forward Euler time-stepping is used with relation formula_17 and degree-four interpolation polynomials for the interpolations. Second-order centered differences are used for the spatial discretization. The CPM results in the expected second order error in the solution formula_18. The closest point method can be applied to various PDEs on surfaces. Reaction–diffusion problems on point clouds [RD], eigenvalue problems [EV], and level set equations [LS] are a few examples. Closest point method The closest point method