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isaac Mao's Library tagged Entropy   View Popular

07 Oct 09

Universe Has More Entropy Than Thought / Science News

  • A black hole is the entropy champ because there are myriad ways for all the material that has fallen into it to be arranged microscopically while the black hole retains the same numerical values for its observable properties — charge, mass and spin.
11 Jul 09

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10 Dec 08

Study: Digital universe and its impact bigger than we thought

  • by 2011, the amount of electronic data created and stored will grow to 10 times the 180 exabytes that existed in 2006, reflecting a compound annual growth rate of almost 60%.
  • by 2023 the number of stored bits will surpass Avogadro's number, which is the number of carbon atoms in 12 grams, or 602,200,000,000,000,000,000,000 (6.022 x 10^23).
  • 1 more annotations...
14 Jun 08

Future Positive : Front Page

  • he concept of the "order" of information is important here, as it is not the same as the opposite of disorder. If disorder represents a random sequence of events, then the opposite of disorder should imply "not random." Information is a sequence of data that is meaningful in a process, such as the DNA code of an organism, or the bits in a computer program. Noise, on the other hand, is a random sequence. Neither noise nor information is predictable. Noise is inherently unpredictable, but carries no information. Information, however, is also unpredictable. If we can predict future data from past data, then that future data stops being information. We might consider an alternating pattern ("0101010. . . .") to be orderly, but it carries no information (beyond the first couple of bits).
  • but we have not achieved a deeper level of order
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