outer+boundary
51London postal district — The London postal district is the area in England, currently of 241 square miles,HMSO, The Inner London Letter Post , (1980)] to which mail addressed to the LONDON post town is delivered. The area was initially devised in 1856… …
52Valhalla (crater) — Valhalla multiring structure on Callisto Valhalla is the largest multi ring structure (impact crater) on Jupiter s moon Callisto and in the Solar System. It was named after Valhalla, Odin s hall in Norse mythology. Valhalla consists of a bright… …
53SOFAR channel — The SOFAR channel (short for Sound Frequency and Ranging channel), or deep sound channel (DSC),[1] is a horizontal layer of water in the ocean at which depth the speed of sound is minimal. The SOFAR channel acts as a waveguide for sound, and low… …
54Toronto Transit Commission fares — Obverse and reverse of the TTC single ride token introduced in 2006. On the Toronto Transit Commission, fares may be paid with a variety of media, the price of which may be determined by the age of the rider. Contents …
55periphery — I noun ambit, border, borderland, bound, boundary line, circuit, circumambiency, circumference, circumscription, compass, confine, contour, delimitation, demarcation, edge, end, exterior, extreme edge, fringe, frontier, limit, limitation, line of …
56Finite-difference time-domain method — Finite difference time domain (FDTD) is a popular computational electrodynamics modeling technique. It is considered easy to understand and easy to implement in software. Since it is a time domain method, solutions can cover a wide frequency… …
57Laurent series — A Laurent series is defined with respect to a particular point c and a path of integration γ. The path of integration must lie in an annulus (shown here in red) inside of which f(z) is holomorphic (analytic). In mathematics, the Laurent series of …
58Shape — The shape (OE. sceap Eng. created thing ) of an object located in some space refers to the part of space occupied by the object as determined by its external boundary abstracting from other aspects the object may have such as its colour, content …
59Racetrack (game) — Racetrack is a paper and pencil game of unknown origins, played by two or more players. It is also known under names such as Vector formula, Vector rally, Vector race, Graph racers, PolyRace, Paper and pencil racing, or the Graph paper race game …
60Geology of solar terrestrial planets — The geology of solar terrestrial planet mainly deals with the geological aspects of four planets of the Solar system namely, Mercury, Venus, Earth and Mars and one terrestrial dwarf planet, Ceres. Objects like Pluto are similar to terrestrial… …
