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User: physics-boy

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  1. Photonics.. on Optical Microchip Breakthrough In Canada? · · Score: 3

    I'm dissapointed with the lack of technical detail
    in the article. I'm still trying to figure out
    what is so novel about this. There has been an
    aweful lot of work done for years now on trapping and guiding light. The big issue is efficiency.
    The most promising technology I have seen for
    photonic computing is guiding along defects of a photonic band-gap in a photonic crystal. This is
    lossless guiding!!! Thats right, no photons can
    escape! This research is lead by Joannopoulos at MIT http://ab-initio.mit.edu/photons Pretty
    interesting possibilities since a photonic crystal
    restricts photons of a given wavelength range from
    propagating throught the material. A defect in
    the 'crystal' allows the forbidden light to be
    guided along the defect without leaking into the
    bulk. Light can even be guided around right
    angles without loss.

    So we have the pipes, now we need the light
    equivolent of transisters. But thats coming.

    Jeremy

  2. Thank you... on First cloned human embryo revealed · · Score: 1

    Agreed. I am having trouble understanding what all the excitement is about considering clones are not duplicates. A clone would be an individual who just happens to be genetically identical.

    Frankly I don't see much advantage. Genetic diversity is generally considered good for a species.

  3. Isotopic? on Black Holes...Pink? · · Score: 1

    I agree, but wouldn't much of the material being drawn toward the observer be located on the oposite side of the event horizon so as to be out of sight. It seams the net affect would be more of the visable acretion disk would be red shifted. Another question: Is the relative velocity of the acreting material with respect to the object great enough to be significant when compared to the expansion of the universe?

    Sorry, I should do some research, I'm not much of an astronomer yet...

  4. Microsoft's "interest" in a real test... on ESR and the MindCraft Fiasco · · Score: 1

    I agree that you would expect Mindcraft to want to clear their name by performing the test again, but it strikes me that your parenthetical comment, "But since microsoft isn't interested in a real test that isn't going to happen" may have missed the mark. If I were Microsoft, I would be very interested in a second, more fair test. I would be very interested to see that it didn't happen.

    Food for thought.

  5. Cold fusion on Fusion Research Coverage · · Score: 1

    Ummm, I'm not sure I would invest any money in anything that claims to be cold fusion. I won't say that it isn't possible, becuase thats always a stupid thing to say, but I don't think any physicists are trying to get "cold fusion" to work. This is merely an improvement in the design of old fusion technology. It still uses more energy to fire this thing up then it produces, so don't get to excited yet. But all improvement are a good thing.