Slashdot Mirror


User: colinrichardday

colinrichardday's activity in the archive.

Stories
0
Comments
4,799
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 4,799

  1. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    If any point on the surface of a sphere is as much a center as any other point, then the term "center" doesn't really mean anything. As for whether time is linear or not, I may not know. But if nonlinearity precludes time from having a center, why wouldn't the nonlinearity of space preclude it from having a center?

    As for your dice example, again, each face may have a center, but that doesn't translate into the surface of the die having a center>

  2. Re:Nothing unreal exists on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    DM9290 was citing that in a previous post, but did not say it (him/her)self.

  3. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    No, it isn't obvious.

  4. Re:Nothing unreal exists on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    And if any of those multiple ways is correct, then DM9290 is correct. But I would claim that the optical definition is more fundamental physically.

  5. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    Each individual face of a die has a center; the surface of the die as a whole does not.

  6. Re:Nothing unreal exists on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    The parent never referred to redness.

  7. Re:Nothing unreal exists on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    And if we simply define color optically rather than psychologically?

  8. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    To say that something is the center means that there is only one center. I will also ask, what does it mean for the North Pole to be a center of the earth's surface?

  9. Re:Nothing unreal exists on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    So "red" does not refer to electromagnetic radiation within a certain range of frequencies?

  10. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    I wasn't trying to make a paradox. I am trying to ask about the temporal center (if such there be) of the universe.

    And if any point can be a center of something, then nothing is the center of it.

  11. Re:Weird on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    If they give the exact same predictions, both matching observations with the same accuracy and precision, then you take the easier to calculate one.

    But how would you explain the deviation of Ptolemaic orbits from straight-line motion?

  12. Re:Bad example on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    Even if you could do this with respect to earth-based observations, how would you square this with observations from probes far away from the earth?

  13. Re:Bad example on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    But a geocentric (both helio- and geo- are Greek) description would have to posit forces to account for the motion. General Relativity only allows you to geometrize away acceleration due to gravity, not acceleration due to other forces.

  14. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    Quite the contrary. The universe includes everything, regardless of time. If we view the universe as having a least temporal coordinate, then the Big Bang is not centered in time.

    As for you claim that "somewhere" has to be at the center, what is the center of the surface of a sphere?

  15. And another thing on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    It's no more real or less real than any model of a postulated external reality based on our sensory impressions and data, reinforced by reason-based statistical inference.

    And how do you get sense impressions without sensor cells? And are the sensor cells "external", or is our awareness of them just a model of a postulated external reality?

  16. Re:Sensible on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 2

    One can view complex addition as a shift in two dimensions; one can view multiplying by a complex number of modulus one as a rotation; and one can view multiplying by a real number not of modulus one as a compression or dilation.

  17. Re:Sensible on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    Aren't mp3s lossy? Maybe we should use wav-chlorians?

  18. Re:Except ... on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    The center of the universe has to be "somewhere".

    Even if there were a center to the Universe, it would also have to be the center with respect to time.

  19. Re:Bells theorem on Study Says Quantum Wavefunction Is a Real Physical Object · · Score: 1

    It's no more real or less real than any model of a postulated external reality based on our sensory impressions and data, reinforced by reason-based statistical inference.

    Are sense impressions (or neural states in our visual cortex) objects of perception, or are they means of perception?

  20. Re:Who could ever need more than 740KHz? on Intel's 4004 Microprocessor Turns 40 · · Score: 1

    Well, it's OK for the car.

  21. Re:Who could ever need more than 740KHz? on Intel's 4004 Microprocessor Turns 40 · · Score: 1

    Steve Martin would just tell you to do googolphonic sampling using a moon-rock needle.

  22. Re:How about Fedora? on Linux Mint: the New Ubuntu? · · Score: 1

    Perhaps, but I (personally) had trouble using apt on the command line. What are the equivalents of rpm -qs package or rpm -qf file? The first lists the files in package package, and the seconds returns the package that contains file.

  23. Re:Programming on What's Keeping You On Windows? · · Score: 1

    Does Visual Studio have LaTeX support? Otherwise I'm staying with GNU Emacs.

  24. Re:Switched back to Windows from Linux/OSX on What's Keeping You On Windows? · · Score: 1

    I purchased a new computer in 2008, but couldn't afford Windows at the time so I installed linux.

    You got a new computer in 2008 that didn't come with Windows?

  25. Re:FTFA: Not sharing so much as building together on Teaching Programming Now Emphasizes Sharing · · Score: 3, Insightful

    Making the top 90% doesn't seem so hard. Or did you mean top 10%?