permalloy
121Arnold, Harold DeForest — ▪ American physicist born September 3, 1883, Woodstock, Connecticut, U.S. died July 10, 1933, Summit, New Jersey American physicist whose research led to the development of long distance telephony (telephone) and radio communication.… …
122Elmen, Gustav Waldemar — ▪ American electrical engineer born Dec. 22, 1876, Stockholm, Sweden died Dec. 10, 1957, Englewood, N.J., U.S. American electrical engineer and metallurgist who developed permalloys (Permalloy), metallic alloys with a high magnetic… …
123nickel processing — Introduction preparation of the metal for use in various products. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their importance to a… …
124Fictional universe of Avatar — In the 2009 science fiction film Avatar, director James Cameron conceived a fictional universe in which humans seek to mine unobtanium on the fictional exoplanetary moon, Pandora. The Earth like moon is inhabited by a sapient indigenous humanoid… …
125Elliott Cresson Medal — given to Emile Berliner in 1913 Presented by Franklin Institute Country US …
126Coercividad — Una familia de lazos de histeresis obtenidos a partir de acero magnético de grano orientado (BR denota remanencia y HC es la coercividad). En ciencia de materiales, la coercividad, también llamada campo coercivo o fuerza coerciva de un material… …
127MÉMOIRES À BULLES MAGNÉTIQUES — Lorsqu’un matériau magnétique de faible épaisseur est soumis à un champ magnétique uniforme, des zones aimantées de polarisations opposées apparaissent. Selon l’intensité du champ, on arrive à créer de très petits domaines de forme cylindrique… …
128MÉTALLURGIE — LA MÉTALLURGIE est l’art d’extraire les métaux de leurs minerais, d’élaborer des alliages, de les transformer en produits demi finis et de les mettre en forme pour leur utilisation (produits «finis»). Elle couvre ainsi trois grands domaines… …
