🚀 go-pugleaf

On Mar 28, 9:46 am, Pentcho Valev <pva...@yahoo.com> wrote:
> http://query.nytimes.com/gst/fullpage.html?res=9A05EED81E3EF932A35752C0A9629C8B63
> Brian Greene: "A hundred years ago today, the discovery of special
> relativity was still 18 months away, and science still embraced the
> Newtonian description of time. Now, however, modern physics' notion of
> time is clearly at odds with the one most of us have internalized.
> Einstein greeted the failure of science to confirm the familiar
> experience of time with ''painful but inevitable resignation.'' The
> developments since his era have only widened the disparity between
> common experience and scientific knowledge. Most physicists cope with
> this disparity by compartmentalizing: there's time as understood
> scientifically, and then there's time as experienced intuitively. For
> decades, I've struggled to bring my experience closer to my
> understanding. In my everyday routines, I delight in what I know is
> the individual's power, however imperceptible, to affect time's
> passage. In my mind's eye, I often conjure a kaleidoscopic image of
> time in which, with every step, I further fracture Newton's pristine
> and uniform conception. And in moments of loss I've taken comfort from
> the knowledge that all events exist eternally in the expanse of space
> and time, with the partition into past, present and future being a
> useful but subjective organization."
>
> http://deseretnews.com/article/1,5143,695265340,00.html
> "Greene, professor of physics and mathematics at Columbia University,
> New York City, and author of best-selling books on string theory,
> spoke Tuesday at Brigham Young University's Marriott Center. His book,
> "The Elegant Universe," was developed into a three-part series
> broadcast by PBS. "The Fabric of the Cosmos: Space, Time and the
> Texture of Reality," the title of his latest book, also was the name
> of the lecture. "Space and time are the most familiar and yet most
> enigmatic concepts in science today," Greene said, but they are not
> what our senses would lead us to believe. "We are learning that
> reality is not what we think it is. The very basis of existence is not
> what we think it is," he said......But if string theory is correct,
> "it says something really wild," Greene said. It fails when restricted
> to our three spacial dimensions -- up and down, left and right, front
> and back. "If that's all there is in space," he said, "this thing
> doesn't work." Not until 10 spacial dimensions are used in the
> calculations do the equations work. But we perceive only three. Where
> are the others? They could be curled up within the normal dimensions,
> he said."
>
> http://www.online-literature.com/orwell/1984/George Orwell "1984":
> "In the end the Party would announce that two and two made five, and
> you would have to believe it. It was inevitable that they should make
> that claim sooner or later: the logic of their position demanded it.
> Not merely the validity of experience, but the very existence of
> external reality, was tacitly denied by their philosophy. The heresy
> of heresies was common sense. And what was terrifying was not that
> they would kill you for thinking otherwise, but that they might be
> right. For, after all, how do we know that two and two make four? Or
> that the force of gravity works? Or that the past is unchangeable? If
> both the past and the external world exist only in the mind, and if
> the mind itself is controllable what then?"

http://arxiv.org/PS_cache/arxiv/pdf/0704/0704.2667v1.pdf
Wormholes as Black Hole Foils
Thibault Damour and Sergey N. Solodukhin
"One of the most striking predictions of Einstein's theory of gravity
is the existence of black holes.....In this note, we consider a very
simple type of black hole foil: a wormhole [10]. Though a wormhole
does not have an event horizon, and differs, in principle, in several
other important ways from a black hole, we shall show here that, if a
certain parameter entering its definition is small enough, a wormhole
is essentially astrophysically indistinguishable from a black hole."

Pentcho Valev
pvalev@yahoo.com