Decoherence and Ontology (or: How I learned to stop worrying and love FAPP)
نویسنده
چکیده
NGC 1300 (shown in figure 1) is a spiral galaxy 65 million light years from Earth. We have never been there, and (although I would love to be wrong about this) we will never go there; all we will ever know about NGC 1300 is what we can see of it from sixty-five million light years away, and what we can infer from our best physics. Fortunately, “what we can infer from our best physics” is actually quite a lot. To take a particular example: our best theory of galaxies tells us that that hazy glow is actually made up of the light of hundreds of billions of stars; our best theories of planetary formation tell us that a sizable fraction of those stars 1Source: http://leda.univ-lyon1.fr/. This photo taken from http://hubblesite.org/ gallery/album/galaxy/pr2005001a/. [NB: issue of getting credit here.]
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تاریخ انتشار 2009