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beam null

См. также в других словарях:

  • Null fill — is used in radio antenna systems which are located on mountains or tall towers, to prevent too much of the signal from overshooting the nearest part of intended coverage area. Phasing is used between antenna elements to take power away from the… …   Wikipedia

  • Beam tilt — is used in radio to aim the main lobe of the vertical plane radiation pattern of an antenna below (or above) the horizontal plane.The simplest way is mechanical beam tilt, where the antenna is physically mounted in such a manner as to lower the… …   Wikipedia

  • Null-steering beamformer — Null Steering is a method of beam forming for narrow band signals where we want to have a simple way of compensating delays of receiving signals from a specific source at different elements of the antenna array. In general to make use of the… …   Wikipedia

  • Null dust solution — In mathematical physics, a null dust solution (sometimes called a null fluid) is a Lorentzian manifold in which the Einstein tensor is null. Such a spacetime can be interpreted as an exact solution of Einstein s field equation, in which the only… …   Wikipedia

  • H. Beam Piper — Henry Beam Piper (* 23. März 1904 in Altoona, Pennsylvania; † 9. November 1964) war ein US amerikanischer Science Fiction Autor, der immer als H. Beam Piper veröffentlichte. Inhaltsverzeichnis 1 Leben und Werk 2 Rezeption 3 …   Deutsch Wikipedia

  • H. Beam Piper — Henry Beam Piper (March 23, 1904 – c. November 6, 1964) was an American science fiction author. He wrote many short stories and several novels. He is best known for his extensive Terro Human Future History series of stories and a shorter series… …   Wikipedia

  • H. Beam Piper — Nom de naissance Henry Beam Piper Activités Romancier Naissance 23 mars 1904 Altoona, Pennsylvanie …   Wikipédia en Français

  • Bonnor beam — In general relativity, the Bonnor beam is an exact solution which models an infinitely long, straight beam of light. It is an explicit example of a pp wave spacetime.The Bonnor beam is obtained by matching together two regions:* a uniform plane… …   Wikipedia

  • List of devices used by Doctor Doom — This article lists devices used by the Doctor Doom, a fictional supervillain of the Marvel Comics universe and enemy of the Fantastic Four. Over the course of his appearances, Doom has used over 100 devices, many of which he also invented.… …   Wikipedia

  • Pp-wave spacetime — In general relativity, the pp wave spacetimes, or pp waves for short, are an important family of exact solutions of Einstein s field equation. These solutions model radiation moving at the speed of light. This radiation may consist of:*… …   Wikipedia

  • Space Runaway Ideon — Screenshot of an Ideon eyecatch 伝説巨神イデオン (Legendary Giant God Ideon) Genre Mecha, Space opera …   Wikipedia

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