multifrequency radar

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telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… … Universalium
Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… … Wikipedia
undersea exploration — Introduction the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments Included in the scope of undersea exploration are the physical and chemical… … Universalium
Liste des satellites indiens — L Inde a lancé plus de 50 satellites de différents types depuis 1975. Ils ont été lancés par des lanceurs Américains (Delta), Russes (Vostok), Européens (Ariane) et la navette spatiale américaine. L organisation responsable des satellites indiens … Wikipédia en Français

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