[Jewelry making - Article 00099] - Re: [Orchid] Curing investment under pressure for casting

[Peter W . Rowe]

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>     I meant to write "_MATTER_" and not atoms although that is
>     partly true too. 

    I'm not sure this is still completely accepted truth. Watching too
    many science channel and discovery channel shows can fill one's head
    with info I don't normally need, and one such show involved the
    so-called "Hawking paradox", a series of calculations by Stephen
    Hawking involving the theory that over time, black holes evaporate
    away and are lost. This implied that matter/energy itself was
    destroyed. What bothered physics folks about this wasn't the
    destruction of matter or energy, but rather the destruction of the
    "information" it contained. After decades of wrestling with this
    paradox, One physicist concluded, if I remember the show right,
    concluded that the information was not lost, because during the
    process of matter originally falling into the black hole, it's
    information would be imprinted on the event horizon, and thus
    preserved. Hawking himself, I think, resolved this by noting that the
    math pretty much requires multiple paralell universes, and for every
    one in which a black hole disappeared, there'd be others in which the
    same black hole never formed, so the information lost in one paralell
    universe would be preserved in another. Very dizzying stuff indeed
    for this old non-math type... But this implies that the matter or
    energy itself, even if it's information is preserved, CAN be
    destroyed, at least within the limits of our own universe... 

    Like I said. Too many episodes of discovery channel... (grin) 

    And no doubt I've not got it quite right either. 

cheers
Peter
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