A Still More Glorious Dawn Awaits

carl sagan glorious dawn
My buddy Gordon tipped me to the song Glorious Dawn by Colorpulse featuring Carl Sagan and Stephen Hawking:

[youtube=http://www.youtube.com/watch?v=zSgiXGELjbc]

After so many years since his amazing television show Cosmos, it strikes me how much I like the way he thinks – how he imagines vistas of space and time:

An still more glorious dawn awaits: not a sunrise, but a galaxy rise – a morning filled with four hundred billion suns: the rising of the Milky Way.

How he synthesizes facts about the world:

But the brain does more than just recollect: it intercompares, it synthesizes, it analyzes, it generates abstractions … the brain has its own language for testing the structure and consistency of the world.

How he combines prediction and caution:

The sky calls to us; if we do not destroy ourselves, we will one day venture to the stars.

And most of all, how beautifully he writes:

The surface of the Earth is the shore of the cosmic ocean. Recently, we’ve waded a little way out … and the water seems inviting.

When I grow up, I want to be like Carl. So check the video out on Youtube, go to Colorpulse’s site for more videos, or to Amazon for a copy of Cosmos.

-The Centaur

Gravity Wave Lasers and Faster Than Light

If only the theory mentioned in this article were true…

Chiao and co ask how big is this effect of a gravitational wave on a thin superconducting sheet compared to the effect on an ordinary conducting sheet. The answer? 42 orders of magnitude bigger.

…then just by putting two superconducting sheets together we would have gravity wave lasers. They’d probably be practical within twenty years, and Lord knows what we’d have within a hundred. Unfortunately this probably violates the equivalence principle and is likely nonsense:

First, Chaio assumes that coopers pairs fall differently than normal matter in a gravitational field…which basically means violation of Equivalence Principle….and there is no physical evidence for that assumption….neither does he give a rigorous treatment to prove that ASSUMPTION.

In other news, scientists studying the Alcubierre warp drive have found yet another way it would not work: in addition to being unstable, non-steerable, non-startable, and requiring planet-sized masses of unobtainable negative energy, it would also cook the occupants as soon as you exceeded the speed of light.

Sigh.
-the Centaur

Set Phasers to “Ouch”

Rayethon has developed the Klingon agonizer!

Run Away, The Ray Gun Is Coming:

In tests, even the most hardened Marines flee after a few seconds of exposure. It just isn’t possible to tough it out. This machine has the ability to inflict limitless, unbearable pain. What makes it OK, says Raytheon, is that the pain stops as soon as you are out of the beam or the machine is turned off.

Actually this is better than a Klingon agonizer, which required direct contact:

Agonizer

An agonizer was a small device worn on the belts of Imperial personnel in the mirror universe, used to inflict pain for minor transgressions. [Agonizers] needed physical contact with their victims to be effective. In the primary universe, the Klingons also used a similar device…

Rayethon’s “Silent Guardian”, in contrast, is a beam of microwaves that penetrates the top layer of skin and stimulates nerve endings up to half a mile away.

Take that, Kang!
-the Centaur

Cause and Effect

So why is it when I read a book on five dimensional physics

…all I hear is the sound of the TARDIS?

Most odd…
-the Centaur

P.S. Five dimensional physics is not a joke: the short story is that Kaluza and Klein outlined how one could rewrite Einstein’s gravity equations in five dimensions and shake them real hard to make Maxwell’s equations for electromagnetism fall out, and all that modern nonsense with strings is just an attempt to make all the other interesting particles we’ve found fall out of the equations too. For those of you (like me) who are only acquainted with length, height, depth, and age, and are thus puzzled where the extra dimensions go, ask yourself this: you can model a garden hose as a curved sheet with two dimensions, but how significant really is its circumference to a squirrel too large to do anything but run along its length?

Book Review: Physics and Beyond

(Apologies for the repost … testing out Blogger 2.0’s new Labels feature)
Physics and Beyond by Werner Heisenberg
An amazingly human book about physics. In deeply personal terms, Heisenberg tells how he grew from a war-tossed youth to an elder statesman of physics. His thesis is that physics is more than just experiments, numbers and math; instead, it is a deeply social process of discussion among physicists trying to understand the world experiment reveals around them. He weaves an idyllic picture of the interchange among the physicists of his generation, portraying the quantum mechanics as emerging not from dry scientific discussions but from vigorous literary, philosophical and religious interchanges, shared excitement and brassy poker games, and invigorating hiking, mountain climing and sailing adventures. Heisenberg carefully picks out key conversations during his life that ultimately led to the Uncertainty Principle that bears his name, interwoven with key turns of events that illuminate the slow disintegration of Germany leading up to World War II. We watch the idealistic, musical Youth Movement of his childhood degenerate into an edgy conversation with a Hitler Youth member who overhears Heisenberg playing. We see his despair as he is conscripted into the atomic bomb program and tries to steer it towards nuclear piles, rather than nuclear bombs. And we follow him through harrowing bike rides through the lines, the rescue of an old man from a burning house, the shock of an avalanche and an encounter with an unexpectedly friendly American bear.

Truly an amazing book.

News Flash: Established Scientific Theory May Be Wrong

Which one, you ask? Oh. Let’s see… uh, well, first of all, in health the low levels of radiation used in X-rays may pose a cancer risk after all, though it is a slight one – but on the other hand moderate sun exposure, long-derided for its potential for skin cancer, may prevent more cancers than it causes by helping the body generate cancer-fighting vitamin D. Or in particle physics and cosmology, it’s hard to keep track of who’s found a crack in the Standard Model and the Big Bang theory this week … and which of those from last week have then been labeled crackpots this week.

But the theory I was actually thinking of was the traditional story of how humans got to the New World: by a land bridge, 11,000 years ago. According to New Scientist, 40,000 year old footprints preserved in ash may upset this view. The scientists who discovered and studied the footprints have no idea how humans got there so early — but they are confident enough about the the dating of their footprints to ask other scientists to check their work.

This isn’t the first time that evidence has surfaced that humans were there earlier, but traditional scientists wanted to ignore the evidence in favor of their models: “The conventional view is that humans arrived in the Americas via Beringia around 11,000 years ago, when a land bridge became available between Siberia and Alaska. There have been claims about earlier waves of settlers, who must have made the crossing over water, based mainly on sites with signs of habitation dated up to 40,000 years ago, but these claims have drawn intense criticism.”

SO obviously this new evidence will need to be carefully vetted, as the scientists who put it forward themselves claimed. But, in the end, the truth will come out, found by people who are willing to look clearly at difficult problems with an open mind, clearing away the smudges from the screen until the phenomenon can be seen clearly, or not at all. The truth does NOT come to those who reject the data before them out of hand, on the specious principle that “extraordinary claims require extraordinary evidence”: that kind of thinking caused people to deny the movement of the Earth around the Sun, or of the continents upon the Earth, or of rocks from the sky to the Earth itself.

On that note, and of those people, I am reminded of Thomas Jefferson’s thoughts on meteorites: “Gentlemen, I would rather believe that two Yankee professors would lie than believe that stones fall from heaven.”

I, on the other hand, think we should let the data speak for itself.

Your Cometbuster Deformed My Horoscope

Been feeling “off” lately? Does your daily horoscope no longer seem SO relevant just to you? Well, now we know why:

In the wake of the successful Deep Impact probe, an astrologer is now suing NASA over the irreparable harm it caused to “the natural balance of the forces of the universe.”

Whoops. Sorry about that. For those who have been suffering more long-standing dysphoria, however, NASA scientists had this to say:

We had nothing to do with it.

Seriously, guys, if an entire comet (the astrological symbol of doom) smacking into the largest planet (the astrological symbol of luck) isn’t going to deform your horoscopes, there’s no way 300 pounds of copper dinging a comet will.

-the Centaur

Cut me some SLAC!

I just had some pictures developed and found these gems from my November 2003 trip to the Stanford Linear Accelerator:

Some of the other pictures developed are so old that, well,

let’s just say that half the couples in one Christmas shot are

either getting divorced or have been for some time now.

Oy, do I need a digital camera.