منابع مشابه
Effects of Aging on Mechanical and Optical Properties of Translucent and Opaque Zirconia
Background and Aim: This study evaluated the effect of hydrothermal aging on opti-cal and mechanical properties of opaque and translucent zirconia. Materials and Methods: For the biaxial flexural strength (BFS) test, 40 sintered opaque and translucent disc-shaped zirconia, and for the assessment of surface rough-ness and optical properties, 20 specimens were fabricated and artificially aged in...
متن کاملConoscopic holography: toward three-dimensional reconstructions of opaque objects.
Conoscopic holography is an interferometric technique that permits the recording of three-dimensional objects. A two-step scheme is presented to recover an opaque object's shape from its conoscopic hologram, consisting of a reconstruction algorithm to give a first estimate of the shape and an iterative restoration procedure that uses the object's support information to make the reconstruction m...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولOptical Studies of the Structure and Dynamics of Opaque Colloids
Three fundamental experiments on multi-particle interactions in hard-sphere systems are presented in this thesis. In the first experiment, a mixture of two monodisperse colloids with different particle diameters, but the same particle composition, is studied using diffusing-wave spectroscopy. We find that both the particle structure and the hydrodynamic interactions between large and small ball...
متن کاملSammon’s Projection for Clustering Complex Geographical Objects
space by means of projection allows the analyst to investigate inter-object and inter-cluster similarities and dissimilarities. For the investigation of clustering results, the points in the projection space are coloured according to the clusters the respective objects belong to. Furthermore, the projection itself can be used for building clusters according to diverse principles. In this paper,...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1891
ISSN: 0036-8733
DOI: 10.1038/scientificamerican04041891-216