electric double refraction
91atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …
92hydrologic sciences — Introduction the fields of study concerned with the waters of the Earth. Included are the sciences of hydrology, oceanography, limnology, and glaciology. In its widest sense hydrology encompasses the study of the occurrence, the… …
93CARBONE — Le carbone est l’élément chimique non métallique de symbole C et de numéro atomique 6. Il est présent dans de nombreux composés naturels: gaz carbonique de l’atmosphère, roches calcaires, combustibles (gaz, pétrole, charbons minéraux). C’est de… …
