Posts Tagged ‘Universe’
“It is difficult to fully appreciate how much our picture of the universe has changed in the span of a single human lifetime”*…
… and it continues to change…
Our universe could be the mirror image of an antimatter universe extending backwards in time before the Big Bang. So claim physicists in Canada, who have devised a new cosmological model positing the existence of an “antiuniverse” which, paired to our own, preserves a fundamental rule of physics called CPT symmetry. The researchers still need to work out many details of their theory, but they say it naturally explains the existence of dark matter.
Standard cosmological models tell us that the universe – space, time and mass/energy – exploded into existence some 14 billion years ago and has since expanded and cooled, leading to the progressive formation of subatomic particles, atoms, stars and planets.
However, Neil Turok of the Perimeter Institute for Theoretical Physics in Ontario reckons that these models’ reliance on ad-hoc parameters means they increasingly resemble Ptolemy’s description of the solar system. One such parameter, he says, is the brief period of rapid expansion known as inflation that can account for the universe’s large-scale uniformity. “There is this frame of mind that you explain a new phenomenon by inventing a new particle or field,” he says. “I think that may turn out to be misguided.”
nstead, Turok and his Perimeter Institute colleague Latham Boyle set out to develop a model of the universe that can explain all observable phenomena based only on the known particles and fields. They asked themselves whether there is a natural way to extend the universe beyond the Big Bang – a singularity where general relativity breaks down – and then out the other side. “We found that there was,” he says.
The answer was to assume that the universe as a whole obeys CPT symmetry. This fundamental principle requires that any physical process remains the same if time is reversed, space inverted and particles replaced by antiparticles. Turok says that this is not the case for the universe that we see around us, where time runs forward as space expands, and there’s more matter than antimatter.
Instead, says Turok, the entity that respects the symmetry is a universe–antiuniverse pair. The antiuniverse would stretch back in time from the Big Bang, getting bigger as it does so, and would be dominated by antimatter as well as having its spatial properties inverted compared to those in our universe [as per the illustration above]…
More at “Our universe has antimatter partner on the other side of the Big Bang, say physicists,” in @PhysicsWorld.
Apposite: “The Big Bang no longer means what it used to.”
* Lawrence M. Krauss, A Universe from Nothing: Why There Is Something Rather Than Nothing
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As we debate doppelgangers, we might send chronologically-accurate birthday greetings to Louis Essen; he was born on this date in 1908. A physicist, he is best remembered for his measurements of time– he invented the quartz crystal ring clock and the first practical atomic clock. His cesium-beam atomic clock ultimately changed the way time is measured: the cesium atom’s natural frequency was formally recognized as the new international unit of time in 1967; the second was defined as exactly 9,192,631,770 oscillations or cycles of the cesium atom’s resonant frequency, replacing the old “second” which had been defined in terms of the Earth’s motion.
Perhaps unsurprisingly, given Essen’s punctilious dedication to accuracy, he was a critic of Einstein’s theory of relativity, particularly as it related to time dilation. Moreover, we note (with an eye to the item above) that Essen’s clocks measured time in only one direction…
“Eventually everything connects”*…
Long-time readers will know of your correspondent’s fascination with Powers of Ten, a remarkable short film by Charles and Ray Eames, with Philip Morrison, that begins with a couple having a picnic, zooms out by “powers of ten” to the edge of the universe, then zooms in (by those same increments) to a proton.
We’ve looked before at a number of riffs on this meditation on scale: see, e.g., here, here, and here.
Now the BBC has updated the first half of Powers of Ten:
It’s a trip worth taking.
* Charles Eames
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As we wrestle with relationships, we might light a birthday candle for Sir Francis Bacon– English Renaissance philosopher, lawyer, linguist, composer, mathematician, geometer, musician, poet, painter, astronomer, classicist, philosopher, historian, theologian, architect, father of modern science (The Baconian– aka The Scientific– Method), and patron of modern democracy, whom some allege was the illegitimate son of Queen Elizabeth I of England (and others, the actual author of Shakespeare’s plays)… He was in any event born on this date in 1561.
Bacon (whose Essays were, in a fashion, the first “management book” in English) was, in Alexander Pope’s words, “the greatest genius that England, or perhaps any country, ever produced.” He probably did not actually write the plays attributed to Shakespeare (as a thin, but long, line of enthusiasts, including Mark Twain and Friedrich Nietzsche, believed). But Bacon did observe, in a discussion of sedition that’s as timely today as ever, that “the remedy is worse than the disease.”

“What I desire of a poem is a clear understanding of motive”*…
I’m not a Hollywood scriptwriter, but if I were, I know what screenplay I’d write. Imagine a violent murder at the epicenter of early Santa Clara Valley—soon to be renamed Silicon Valley in the popular imagination—and an innocent man sent to Death Row at San Quentin. But a famous literary critic emerges as the super sleuth who gets him freed, amid dark evocations of scandal involving corrupt politicians and murky underworld figures.
You don’t need to imagine it, because it really happened. It’s like the movie Chinatown—in fact, it took place during the same era as that scrumptiously vintage film—but with intriguing literary twists and turns. And, like Chinatown, it possesses all the same overtones of a brutal California origin myth. It would make a riveting film. But in this case the story is true.
On Memorial Day in 1933, a woman’s [Allene Lamson’s] naked body was found, apparently bludgeoned to death, in her Stanford campus home. Within an hour of their arrival on the crime scene, the police had already decided that the husband [David Lamson]—always the prime suspect in a case of this sort—must be the murderer.
…
The police never took any other explanation seriously. A student named John Venderlip had seen a suspicious character near the Lamson home the morning of the crime, as well as the night before. But no effort went into investigating this lead. The possibility of accidental death was ruled out, too, although it would later play a decisive role in the case.
This web of speculation and insinuation proved sufficient to get a conviction after a three-week trial that was front page news day after day. The jury only deliberated for eight hours before delivering a guilty verdict. The judge handed out the death penalty—a court-mandated hanging within 90 days. And David Lamson was sent off to San Quentin to await his imminent execution on Death Row.
And that would seem to be the end of the story. But it wasn’t. And the main reason for this surprising turn into the biggest crime story of its day was a mild-mannered poet and literary critic named Yvor Winters…
In the 1930s, Yvor Winters legitimized literary studies at Stanford—but Hollywood should make a movie about his skills as an amateur detective. A remarkable story from the remarkable Ted Gioia (@tedgioia): “When a Famous Literary Critic Unraveled Silicon Valley’s Most Sensational Murder Case.”
And for further (entertaining, but wholly fictional) accounts of a literary critic’s sleuthing, see Edmund Crispin‘s Gervase Fen novels…
* Yvor Winters
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As we consider the clues, we might remind our selves that if the history of the universe was condensed into a year, the Milky Way would form on this date (May 15), life on earth would appear on September 21, and the dinosaurs would go extinct on December 30. Modern humans would evolve on December 31 at 11:52 PM and Columbus would discover America at 11:59:58 PM. (For more detail: the Cosmic Calendar)
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