roll perturbation

См. также в других словарях:

• Roll cloud — Arcus Arcus de type barrière de nuage au dessus de Toulouse (France). L arcus (du latin : arcus signifiant simplement arc ) désigne un type de nuage bas ayant une forme d un rouleau ou d un arc allongé sur un plan horizontal apparaissant au… …   Wikipédia en Français

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• physical science, principles of — Introduction       the procedures and concepts employed by those who study the inorganic world.        physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …   Universalium

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• Mode Tensoriel — Dans la théorie des perturbations cosmologiques, le terme de mode tensoriel se réfère à une perturbation de la métrique riemannienne de l univers qui correspond à une onde gravitationnelle. Ce type de perturbation ne possède pas d analogue en… …   Wikipédia en Français