منابع مشابه
Core Dynamics of Multi-Armed Spirals in Rayleigh-Bénard Convection
We report experimental observations of the core dynamics of multi-armed, rotating spirals in Rayleigh-Bénard convection for a fluid with Prandtl number near one. In addition to the largescale rotation of the spirals, we found a cyclic core motion within a central area of radius r ≅ nλ/2, where n is the number of spiral arms ending in the core and λ is the wavelength of the pattern. The dynamics...
متن کاملMorphological Classification of Galaxies into Spirals and Non-spirals
The aim of this master's thesis is the classification of images of galaxies according to their morphological features using computer vision and artificial intelligence techniques. We deal specifically with the shape of the galaxy in this project. The galaxies are broadly categorized into 3 categories according to their shape: circular, elliptical and spiral. Out of these 3 possible shapes, corr...
متن کاملSound Spirals
Sound Spirals are part of an ongoing project attempting to interpret sound in a physical medium: sculpturally, mathematically, and irreversibly. They demonstrate different processes for creating data visualisations of recorded audio in the form of 3D printed sculptural art using open source programming tools and audio software (Processing and Audacity) and contemporary 3D printers including the...
متن کاملPentagram Spirals
The pentagram map is a projectively natural map defined on the space of ngons. The case n = 5 is classical; it goes back at least to Clebsch in the 19th century and perhaps even to Gauss. Motzkin [Mot] also considered this case in 1945. I introduced the general version of the pentagram map in 1991. See [Sch1]. I subsequently published two additional papers, [Sch1] and [Sch2], on the topic. Now ...
متن کاملDynamics of thick discs around Schwarzschild-de Sitter black holes
We consider the effects of a cosmological constant on the dynamics of constant angular momentum discs orbiting Schwarzschild-de Sitter black holes. The motivation behind this study is to investigate whether the presence of a radial force contrasting the black hole’s gravitational attraction can influence the occurrence of the runaway instability, a robust feature of the dynamics of constant ang...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1996
ISSN: 0074-1809
DOI: 10.1017/s0074180900230180