Categoria:Comuni del distretto di Weinfelden

Questa pagina contiene i comuni del distretto di Weinfelden, nel Canton Turgovia. Weinfelden

Weinfelden (distretto)

Il distretto di Weinfelden è un distretto del Canton Turgovia, in Svizzera. Confina con i distretti di Kreuzlingen a nord, di Bischofszell a sud-est, di Münchwilen a sud, di Frauenfeld e di Steckborn a ovest. Il capoluogo è Weinfelden. __NOTOC__ __NOEDITSECTION__ Amministrativamente è diviso in 8 comuni:
- Amlikon-Bissegg
- Berg
- Birwinken
- Bürglen
- Bussnang
- Märstetten
- Weinfelden
- Wigoltingen Categoria:Distretti del Canton Turgovia Categoria:Distretti svizzeri

Categoria:Comuni del Canton Turgovia

Questa pagina contiene articoli sui comuni del Canton Turgovia, in Svizzera. Turgovia

Matrioshka Brain

A Matrioshka Brain is a hypothetical megastructure, based on the Dyson sphere, of immense computational capacity. Such a structure would be comprised of a collection of one or more (typically more) Dyson Shells built around a star, and nested one inside another. A significant percentage of the shells would be composed of nanoscale computers (see molecular-scale computronium). These computers would be at least partly powered by the energy exchange between the star and interstellar space. A shell would absorb energy radiated onto its inner surface, utilize that energy to power its computer systems, and re-radiate the energy outwards. The nanoscale computers of each shell would be designed to run at different temperatures; shells at the core could be nearly as hot as the central star, while the outer shell could be almost as cool as interstellar space. The ideal mechanism for extracting usable energy as it passes "through" a shell, the number of shells that could be supported in such a manner, the ideal size of the shells to be constructed, and other details, are all issues of speculation. This nested set of shells has obvious structural analogies to Russian Matrioshka dolls, from which the concept derives its name. The idea of the Matrioshka Brain violates none of the currently known laws of physics, although the engineering details of building such a structure would be staggering, as such a project would require the "disassembly" of significant portions (if not all) of the planetary system of the star for construction materials. Since it is based on the concept of the Dyson sphere, objections to the feasibility of a Matrioshka Brain are more thoroughly explored in that article as difficulties with the Dyson Sphere itself. The term Matrioshka Brain was invented by Robert Bradbury as an alternative to Jupiter Brains - a concept similar to the Matrioshka Brain, but on a smaller planetary scale and optimized for minimum signal propagation delay; a Matrioshka Brain design is concentrated on sheer capacity and the maximum amount of energy extracted from its source the star, a Jupiter Brain more on computational speed. The possible uses of such an immense computational resource tax the imagaination. One idea suggested by Charles Stross, in his novel Accelerando, would be to use it to run perfect simulations or "uploads" of human minds into virtual reality spaces supported by the Matrioshka brain.

External links

- [http://www.aeiveos.com/~bradbury/MatrioshkaBrains/index.html Robert Bradbury's Matrioshka Brain site]
- [http://www.asimovs.com/_issue_0406/nightfall.shtml Short story by Charles Stross mentioning the Matrioshka Brain concept] Category:Fictional computers Category:Megastructures Category:Exploratory engineering

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Categoria:Comuni del distretto di Weinfelden

Weinfelden (distretto)

Categoria:Comuni del Canton Turgovia

Matrioshka Brain

See also

External links