As written up by Aatish Bhatia at Wired, the winners of Princeton’s annual Art of Science competition are announced. “Among the entries are some wonderful ‘oops’ moments, where an experiment goes beautifully wrong, revealing art where you might not have expected to see it…But most of these submissions aren’t accidents. Many of these pieces reveal form, structure, and beauty hidden at a scale that our eyes can’t perceive.”
Tag: Physics
68 km/sec.
By incorporating quasars into the field of study, physicists determine the expansion rate of the universe to within 2.2 accuracy. That rate: 68 kilometers per second (which, for the Douglas Adams aficionados out there, translates into 42 miles per second.) “The uncertainty is plus or minus only a kilometer and a half per second.”
Flat Circle? Try Quantum Entanglement.
Once dismissed as a crank 30 years ago — this apparently happens to theorists of time often — an MIT professor finds his quantum theory of time gaining adherents. “Energy disperses and objects equilibrate…because of the way elementary particles become intertwined when they interact — a strange effect called ‘quantum entanglement.’…’What’s really going on is things are becoming more correlated with each other,’ Lloyd recalls realizing. ‘The arrow of time is an arrow of increasing correlations.'”
Almost Feeding Time.
With an array of telescopes, astronomers are watching a gas cloud waft dangerously close to the supermassive black hole at the center of our galaxy “this month” (Of course, it already happened ages ago, and we’re just now being apprised of it.)
“The gas cloud…could either continue on its current orbit and slingshot around the black hole or it could run into surrounding gas and dust, which will make it lose speed and start sliding down toward the black hole. The first scenario could give scientists insight into the evolution of galaxies and better understand the history of our Milky Way’s own black hole. In the second case, they might get to watch the black hole consume a sizable dinner.” Say hi to Maximillian for me.
Small World, Big Universe.
By way of Dangerous Meta and H-Twins, a handy and interactive chart of the scale of the universe. “The real genius of the interface is the ability to scroll back to a familiar object like a car — the time spent scrolling helps to convey a sense of size and distance.”
Only One Absolute…Everything Freezes.
In the nearest reaches of space (a.k.a. the ISS), NASA scientists plan to create the coldest spot in the universe, in order to toy with the fabric of reality. “No one knows where this fundamental research will lead. Even the ‘practical’ applications listed by Thompson — quantum sensors, matter wave interferometers, and atomic lasers, just to name a few — sound like science fiction. ‘We’re entering the unknown,’ he says.’
As A Matter of Fact, It’s All Dark.
Also in potentially earth-shattering space news, Stephen Hawking — “one of the creators of modern black-hole theory” — has released a new paper (not-yet-peer-reviewed) arguing that there are no black holes, really: Quantum theory suggests that matter eventually escapes from them. “A full explanation of the process, the physicist admits, would require a theory that successfully merges gravity with the other fundamental forces of nature. But that is a goal that has eluded physicists for nearly a century.”
Make it Better Do It Faster.
(Our work is never over.) In more promising future-tech news, scientists figure out a way to store quantum data for much longer than ever before. “Though surviving for 39 minutes may not sound like very long, it only requires one-hundred-thousandth of a second to perform an operation on a single qubit. So theoretically, over 20 million operations could be performed before the qubits’ data decayed by 1 percent.”
Quantum Echo.
By utilizing (as I understand it) the transitive properties of quantum entanglement, scientists in Israel manage to link two photons that never exist at the same time. “It’s really neat because it shows more or less that quantum events are outside our everyday notions of space and time…This sort of thing opens up people’s minds and suddenly somebody has an idea to use it in quantum computing or something.”
The Secrets Beneath.
There are older things than Orcs in the deep places of the world: Symmetry Magazine checks in with the Cryogenic Dark Matter Search experiment happening a mile beneath Minnesota. As I’ve mentioned before, I came close to spending a summer in high school standing around a similar underground science project, searching for neutrinos. “The year 2013 should be an interesting one in the search for dark matter.”