<![CDATA[io9: Physics]]> http://cache.gawker.com/assets/base/img/thumbs140x140/io9.com.png <![CDATA[io9: Physics]]> http://io9.com/tag/physics http://io9.com/tag/physics <![CDATA[ Magnetic Anomaly Map of the World ]]> This map shows areas on the globe where there are disturbances in the Earth's magnetic field. Here, red indicates a stronger magnetic tug, and blue a weaker one (white lines are the edges of tectonic plates). As you can see, disturbances are fairly regularly distributed, but that doesn't stop UFO enthusiasts from saying aliens have a hand in these magnetic fluctuations. Science, however, has a slightly different explanation for why certain objects (including submarines) create a shift in the magnetic field.

According to the Geological Survey of Finland, which created the map out of years of survey research:

This map is the first global compilation of the wealth of magnetic anomaly information derived from more than 50 years of aeromagnetic surveys over land areas, research vessel magnetometer traverses at sea, and observations from earth-orbiting satellites, supplemented by anomaly values derived from oceanic crustal ages. The objective is to provide an interpretive dimension to surface observations of the Earth’s composition and geologic structure. Metamorphism, petrology, and redox state all have important effects on the magnetism of crustal materials.

The magnetic anomalies represented on this map originate primarily in igneous and metamorphic rocks, in the Earth's crust and possibly, uppermost mantle. Magnetic anomalies represent an estimate of the short-wavelenght (< 2600 km) fields associated with these parts of the Earth, after estimates of fields from other sources have been subtracted from the measured field magnitude. In most places the magnetic anomaly field is less than 1 per cent of the total magnetic field.

Magnetic Anomaly Map of the World [via Commission for Geological Maps of the World]

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Thu, 09 Oct 2008 10:00:00 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5060911&view=rss&microfeed=true
<![CDATA[ Intelligent Slime and Stripper Estrous Dominate the Ig Nobel Prizes ]]> Last night, the Annals of Improbable Research held its 18th annual Ig Nobel Prizes. The prizes are awarded for scientific and social achievements "that first make people laugh, then make people think." And this year’s winners include studies on puzzle-solving slime molds, the spermicidal capabilities of Coca-Cola, and the economics of ovulating strippers.

The prizes were awarded in a ceremony at Harvard University’s Sanders Theater in ten areas:

  • Nutrition: Massimiliano Zampini and Clark Spence for demonstrating that, when the sound of eating a potato chip is modified, the eater believes the chip is fresher and crisper than it really is.
  • Peace: The Swiss Federal Ethics Committee on Non-Human Biotechnology and the citizens of Switzerland for adopting the legal principle that plants have dignity.
  • Archeology: Astolfo G. Mello Araujo and Jose Carlos Marcelino for demonstrating how the actions of an armadillo may scramble the contents of an archeological dig site.
  • Biology: Marie-Christine Cadiergues, Christel Joubert, and Michel Franc for discovering that fleas on a dog jump higher than fleas on a cat.
  • Medicine: Dan Ariely for demonstrating the high-cost placebos are more effective than low-cost placebos.
  • Cognitive Science: Toshiyuki Nakagaki, Hiroyasu Yamada, Ryo Kobayashi, Atsushi Tero, Akio Ishiguro, and Agota Toth for discovering that slime molds can solve puzzles.
  • Economics: Geoffrey Miller, Joshua Tybur, and Brent Jordan for discovering that a lap dancer’s ovulatory cycle affects the tips she earns.
  • Physics: Dorian Raymer and Douglas Smith for mathematically proving that a heap of hair or string will inevitably tangle itself into knots.
  • Chemistry: Sharee A. Umpierre, Joseph A. Hill, and Deborah J. Anderson for demonstrating that Coca-Cola is an effective spermicide, and Chuang-Ye Hong, C.C. Shieh, P. Wu, and B.N. Chiang for discovering that Coca-Cola is not an effective spermicide.
  • Literature: David Sims for his study "You Bastard: A Narrative Exploration of the Experience of Indignation within Organizations.”

The 2008 Ig Nobel Prize Winners [Improbable Research]

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Fri, 03 Oct 2008 12:14:00 PDT Lauren Davis http://io9.com/index.php?op=postcommentfeed&postId=5058663&view=rss&microfeed=true
<![CDATA[ Earth: A Very Special Place In the Void ]]> You know that "I'm an insignificant dot in the middle of this enormous universe" feeling you get when you stare up into the night sky a little too long? Well, some Oxford scientists think you might be a little more special than that - or at least, the planet you live on is. Their radical new theory would not only obviate the need for dark energy to explain observed patterns of galactic motion, it would overturn the centuries-old Copernican Principle. Not bad for a day's work.

In the 16th century, Copernicus hypothesized that the Earth is not the center of the solar system, but rather the sun is. Later, cosmologists expanded this idea into the Copernican Principle: Earth is not in a special place in the universe, therefore our observations of local space can be used to infer data about the rest of the universe. When astronomers observed that the universe appears to be expanding at an accelerating rate, they needed to add something to their equations to make it all make sense. That something is dark energy, which would have to exist in massive quantities (as yet, pretty much undetectable) to explain this expansion.

Here's the thing - the universe is really, really, really huge. Just the part we can see is almost incomprehensibly big, and there's a whole lot of universe we can't see. No one knows how big the whole universe is, but it's entirely possible that our part of the universe is just a tiny fraction of the whole. Physicists from Oxford University are considering the idea that the universe we can observe is actually anomalous, a giant void with a low density of matter. The rest of the universe may look substantially different. Doing some number crunching revealed that their model of the universe works without dark energy, but isn't quite as accurate as the current dark energy model. However, they need more observations of certain types of supernovae to refine their numbers - in a few months, their equations may look better with more data.

What's particularly cool is that this maverick theory that tosses a very accepted tenet of astronomy right out the window is being published in Physical Review Letters, one of the most respected physics journals. It sure beats excommunication. Image by: NASA.

Overturning Copernicus, eliminating dark energy. [Nobel Intent]

Tsunami invisibility cloak, dark energy v. the void, sorting nanotubes with light, and more. [EurekAlert!]

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Mon, 29 Sep 2008 13:20:00 PDT Ed Grabianowski http://io9.com/index.php?op=postcommentfeed&postId=5056265&view=rss&microfeed=true
<![CDATA[ LHC Shut Down After a Ton of Liquid Helium Leaks into Tunnel ]]> The Large Hadron Collider (LHC), the mega-physics experiment in Switzerland where atomic particles will be smashed into each other, has been shut down. The BBC reports that a fault opened up in one of the underground tunnels this morning, releasing one ton of liquid helium into the tunnels. This in turn caused 100 supercooled magnets crucial to LHC experiments to heat up and fail (the liquid helium is what keeps the magnets cool). After the successful first startup of the LHC last week, does this mean it could be months or years before another beam gets shot through the vast underground structure?

Things do not look good. Not only was the fire brigade called in to deal with the situation, but vacuum was lost as well as liquid helium. Here's what the BBC had to say:

The superconducting magnets in the LHC must be supercooled to 1.9C above absolute zero, to allow them to steer particle beams around the circuit. As a result of the [leak], the temperature of about one hundred of the magnets in the machine's final sector rose by around 100C. A spokesman for Cern confirmed that it would now be difficult, if not impossible, to stage the first trial collisions next week. Further delays could follow once the damage has been fully assessed over the weekend.

Hopefully this will only be a minor setback, but we'll have to see what the LHC researchers say on Monday.

Hadron Collider Forced to Halt
[via BBC News]

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Fri, 19 Sep 2008 16:29:14 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5052619&view=rss&microfeed=true
<![CDATA[ Watch the LHC Webcams! ]]> Want to see the latest things happening with the compact muon solenoid experiment at CERN, where physicists booted up the Large Hadron Collider yesterday? Now you can watch both the inside of the experimental chamber, and an exciting view of the CERN parking lot on these two live webcams. [via LHC Webcams]

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Thu, 11 Sep 2008 10:47:53 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5048560&view=rss&microfeed=true
<![CDATA[ What Will Happen When the LHC Turns On? 10 Scifi Stories Have the Answer ]]> Today the mad physicists over at Swiss lab CERN will turn on the Large Hadron Collider (LHC) and begin the physics experiments that might end the world. While some fringe scientists worry that the LHC will destroy the fabric of spacetime, the rest of us armchair physicists are on the edge of our seats waiting to see what the giant underground magnet will tell us about, well, the universe. Lucky for us, science fiction has already come up with an answer. We've come up with ten crazy scifi tales where physics experiments destroy the world.

The Mist
In a remote Maine town, a thick fog envelops an area near a military base where a mysterious "Project Arrowhead" appears to have ripped down a wall between two dimensions. Unfortunately, it turns out that the universe in the cosmic string next door has really crappy atmosphere and is full of giant monsters with long teeth. And humans, known across the multiverse as a tasty snack, have lured a ton of those monsters over to chomp us up.

Anathem
I've already mentioned that Neal Stephenson's new novel Anathem contains references to an LHC-esque device that was doing experiments with recreating the Big Bang. Little is known of this device because switching it on led to something the characters in the novel refer to only as The Terrible Events. Records are spotty, especially 3700 years after the fact, which is when the novel takes place. However, we do know that the Terrible Events probably began with LHC-style experiments, and ended with the science centers on planet Arbre being sacked by outraged citizens. The planet spirals into a dark period of war and chaos before completely reorganizing itself and outlawing massive physics experiments.

Earth
In David Brin's 1990 novel Earth, humans create a microscopic black hole that accidentally drops into the core of the planet. If you'll recall, one of the things that the LHC might do is create tiny black holes that exist for a few nanoseconds. Brin imagines a scenario embarrassingly similar to the one in cheesy flick The Core, where the Earth's core stops spinning and gravity gets fucked.

Quiet Earth
In this classic New Zealand apocalypse flick, a man awakens to find himself on an alternate Earth where only a few humans still exist. He suspects the government project he was working on might have had something to do with the change, and his suspicions grow as reality becomes less and less stable. In some ways, the physics mayhem is really a backdrop to the human mayhem that our main characters find themselves in. Even though the tissue of reality is ripping, there are still enough humans left to have a love triangle.

His Dark Materials
Philip Pullman's trilogy that begins with The Golden Compass is about how a few people have learned to use a special knife to cut windows between dimensions. Unfortunately, the windows are causing a shortage of a basic substance in the universe called (depending on your dimension) Dust or dark matter. The overarching quest of the series is to discover what Dust is and why it's running out, which eventually leads the characters to a physics lab in contemporary Oxford.

Donnie Darko
Sure, Donnie Darko is a weird movie that might just be about schizophrenia induced by the Scariest Bunny Suit Ever. But if you take it at face value, Donnie Darko is about the apocalypse that might be unleashed when Donnie manages to travel through time and prevent a death that was supposed to happen. The question is, whose death was supposed to happen? And can you travel through time when you are dead? Whoa, man. Luckily Jake Gyllenhaal is so smoking hot in this movie that you won't pay attention to the plot when he's on screen. And he's on screen a lot.

Doctor Who
Remember in the first season of the new Doctor Who when we had A Very Special Episode called "Father's Day" with Rose going back in time to save her dad's life and accidentally unleashing a bunch of timespace-rending bat things? Obviously the Doctor travels though time, so he and his companions are constantly screwing up the timeline. But apparently that only results in a possible destruction of Earth when Rose goes back to rescue her father from the fatal car accident he suffered when she was a baby. The two contradictory timelines cause monsters to appear and the world to begin ending in a very Buffy-esque way. How will Rose and the Doctor stuff those bats back into the time crack?

SciFi Channel's Flash Gordon
I know all of you loved SciFi's Flash Gordon series — especially in the good old days when I recapped it every week — but you have to admit it's a perfect example of physics experiments that destroy the world. Flash's dad and the dorktastic Dr. Zarkov have invented these devices that allow them to open a doorway between Earth and Mongo. But it turns out their dimension-tripping is destroying the fabric of reality, not to mention getting Ming all excited about stealing Earth's water. One of the big plot arcs from the only season of this tragically-canceled show was trying to stop everybody from opening up dimension doorways because Something Bad would happen.

A Sound of Thunder
Any number of lameass time travel movies show this most basic of physics experiments — moving around in time — destroying the world. But Sound of Thunder is a standout for two reasons. One, it's based on a famous Ray Bradbury short story, which gives it literary cred. And two, it shows that time travel can completely destroy the human world rather than just causing the Nazis to win or Rome to never fall. When our time travelers return to the present after stealing a butterfly from the primeval era, they discover that dinosaurs have won the evolutionary war and are wiping out the last of humanity.

Lexx
Possibly the most awesome Canadian scifi series ever made, Lexx is about a crew of troublemakers on board the Lexx, a planet-eating sentient spaceship. One of the major subplots in Season 4 involved determining the mass of the Higgs-Boson, which all the characters casually refer to as something that "everybody knows" will cause entire planets to be destroyed. Starting tomorrow, the LHC will be conducting tests to determine the mass of the Higgs-Boson. This might be why robot head 790 pointed out that Earth is of the class of planets that usually destroys itself by war, or by unintentionally smooshing itself into a pea-sized object by attempting to measure the mass of the Higgs-Boson.

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Wed, 10 Sep 2008 09:00:00 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5047040&view=rss&microfeed=true
<![CDATA[ Instruction Manual for Large Hadron Collider Online ]]> Want to know more about how to end the world by shooting atomic particles through a gigantic, underground loop full of magnets in Switzerland? Then we've got the book for you: It's the 1500-page instruction manual for operating the Large Hadron Collider (LHC), which will officially start operation in mid-September. I guess if the world does get sucked into a black hole when scientists start the machine, it will be useful to have this around so aliens can reverse-engineer the LHC and figure out what happened. [via Hackaday]

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Tue, 26 Aug 2008 12:52:01 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5042129&view=rss&microfeed=true
<![CDATA[ Texas House Sucked Into Wormhole ]]> Last summer, a condemned house in Houston, Texas was sucked into a small wormhole, its wooden facade slowly slurped though another dimension and spit out into an alley behind the backyard. This bizarre mashup of real estate and theoretical physics was created by local artists Dan Havel and Dean Ruck, who saw in the abandoned house an opportunity to remind people how fragile the fabric of spacetime really is. Below, you can look deep inside the wormhole and see where it comes out on the other end.



This is totally what conspiracy theorists are picturing when they say the Large Hadron Collider in Switzerland will destroy the fabric of the universe. Sadly, this exhibit has been torn down but its weird science flair lives on.

House-sized art exhibit in Texas
[via Gadling] Thanks, Marilyn Terrell!

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Thu, 21 Aug 2008 07:00:00 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5039811&view=rss&microfeed=true
<![CDATA[ This Material Does Not Conform to the Laws of Gravity ]]> Sachiko Kodama is a physics geek turned artist whose intimacy with the laws of magnetism has led her to create art out of magnets and oils filled with magnetic particles. As the magnets interact with the magnetized water, she's able to create amazingly weird, oily shapes that mutate and flow seemingly without reference to gravity. More bizarre violations of the laws of nature below.

One of her sculptures is showing in a group show at the Atlanta Botanical Gardens through the end of October. According to the SculptureSite Gallery, which helped curate the exhibit:

Employing electromagnets and magnetically-charged microfine particles suspended in oil set in motion through a computer controller, Kodama, who is associate professor at Tokyo’s University of Electro-Communications, explores an entirely new territory where the seductive glossy black liquid seems to turn into rows of solid spikes impeccably organized around a spiraling cone, only to dissolve abruptly into obvious liquidity once again

SculptureSite [gallery page]

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Tue, 12 Aug 2008 16:57:07 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5036289&view=rss&microfeed=true
<![CDATA[ First Particle Beam to Shoot Through the Large Hadron Collider Tomorrow ]]> The Large Hadron Collider (LHC) will smash up its its first proton beams this weekend in a test, arousing the fears of conspiracy lovers everywhere. If you'll recall, the LHC is that super-mega physics experiment in Switzerland's CERN Lab that some believe might destroy the world by producing black holes. Above, you can see a visualization of how large the facility is, as it loops under the ground outside Geneva. So what's in store tomorrow when the first beams start circling?

Physicists working on the LHC say that even if the device does produce tiny black holes, they will exist for such a short time that they couldn't possibly do any damage. Instead, they're interested in experiments that could reveal for the first time what dark matter is, and what the universe looked like after the big bang.

Though the LHC won't be in full operation until September 10, when the first real experiments there will get underway, this weekend marks the first time the facility will be used. Researchers will shoot a few particle beams through the magnetized, reinforced tunnels that make up the giant particle accelerator. According to Popular Mechanics:

As part of a scheduled injection test, the LHC will be closed off this Friday, and researchers at CERN will fire protons through one of the eight sectors that make up the sprawling concrete-lined collider tunnel. The purpose of this test? “It’s, ‘Let’s see what happens,’ ” says Judy Jackson, head of the Office of Communications at Fermilab. “It’s a very complex machine. This is a step towards getting ready.”

Let's see what happens? You mean, like whether it produces tiny black holes that last longer than a nanosecond? Awesome.

Start Date for the Large Hadron Collider [Popular Mechanics]

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Fri, 08 Aug 2008 10:36:29 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5034820&view=rss&microfeed=true
<![CDATA[ What Light Through Yonder Laboratory Breaks? It Is the East, and the Large Hadron Collider Is the Sun ]]> Some say it might destroy the world, and others say it looks just like the Stargate, but you and I know the blazing glory that is the Large Hadron Collider (LHC) is just going to do a few little things to change our whole conception of reality. You know, like smashing protons together to recreate the conditions that prevailed in the universe right after the Big Bang. Here you can see the outer barrel of the LHC's compact muon solenoid experiment, which will examine what's happening in an energy region known as the "terascale." Which sounds totally Marvel Comics. Peek below for more hot proton-on-proton action.

Here's the endcap of the ATLAS detector, which contains several layered cylinders around the spot where the where the LHC's proton beams will smash into each other.

Here you can see the gigantic electromagnetic calorimeter, which is 6x7 square meters. According to the Boston Globe:

[It] consists of 3300 blocks containing scintillator, fibre optics and lead. It will measure the energy of particles produced in proton-proton collisions at the LHC when it is started. Photons, electrons and positrons will pass through the layers of material in these modules and deposit their energy in the detector through a shower of particles.

In other words: This device measures the output of the smashed protons.

No, it's not some steampunk fantasy gear. This is a huge magnet that will become part of the endcap of the ATLAS detector we showed you above.

Want to see more hardcore physics experiment insanity? Check out the amazing set of photos at the Boston Globe. The LHC goes online and starts smashing tiny particles later this year.

Large Hadron Collider Nearly Ready [via Boston Globe] (Thanks, Gonzalo Sanchez!)

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Sat, 02 Aug 2008 15:00:00 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5032402&view=rss&microfeed=true
<![CDATA[ Playing Around with Plutonium and Neptunium ]]> Superconductivity, a state where metals lose their electrical resistance, has been for a long time a dream of physicists. It could change the way we use energy and allow us to do things like levitate trains. But currently, superconductivity can be achieved in supercooled metals for brief periods, which severely limits its applications. Now, however, it looks as though the exotic elements plutonium and neptunium might provide a key to understanding this special property of metals. Physicists at Columbia and Rutgers say these elements are teaching them strange new things about electron pairing, and that they may soon be able to make ordinary metals supercondutive at room temperature. [Eurekalert]

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Mon, 21 Jul 2008 09:40:50 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5027325&view=rss&microfeed=true
<![CDATA[ Scared of Bombs? Just Use Your Ray Gun! ]]> "It's a lot nicer if you don't have to walk up to a bomb to find out what it is," quips Larry Senesac of Oak Ridge National Laboratory in Tennessee. I would have to agree: roadside bombs are clearly no fun for anyone. That's why Senesac and his fellow researchers have developed a laser system that can detect bombs from a distance of up to 100 meters. And that's not all — they say their special laser gun could also guard against food poisoning.

By sending out pulses of infrared light, the Oak Ridge laser system can pick up clues about the composition of the materials surrounding it. When the light pulses hit objects, they refract off of those objects, and some of the light is directed back at the laser system itself. Quartz crystals in the laser system transform these light pulses into a full picture of the chemical composition of the objects you want to check out. If the object's activation profile contains chemical signatures of known explosives, you've identified your bomb.

Using this technique, the researchers' laser gun might eventually be used to detect the chemical signatures that exist in spoiled food. One day, you might have a small laser in your cell phone, which you can whip out at the grocery store to get the best possible produce. As laser technology improves, so will this system; researchers are hoping that sensitivity will go through the roof as cost and size shrink accordingly. Three cheers for not exploding, and for always finding the greenest banana of the lot!

Ray Gun Detects Bombs at Distance [Discovery Channel]

Image of ray gun by ImageZoo

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Wed, 09 Jul 2008 10:02:03 PDT Nivair H. Gabriel http://io9.com/index.php?op=postcommentfeed&postId=5023186&view=rss&microfeed=true
<![CDATA[ Watching Movies in Vapor ]]> This image is not light projected onto vapor: it is light that is literally contained in vapor. Gas can be a storage medium, holding data like these images of the number 2 for microseconds at a time. Scientists in Israel are figuring out ways to turn gas chambers into the hard drives for futuristic quantum computers. Or into movie screens. Seriously awesome. [PhysOrg]

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Mon, 23 Jun 2008 10:06:11 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=5018865&view=rss&microfeed=true
<![CDATA[ Air Force Study Shows How to Boil Eyeballs with Lasers ]]> Silouhette.jpg We may not be using lasers on the battlefield yet, but when we do we'll know exactly how to use them to make our enemies' eyeballs explode. And how to create heat-induced bubbles inside "biological substances" (i.e., bodies). A researcher funded by the Air Force to study laser safety has inadvertently also produced a lot of data on what makes them unsafe too. His paper is ominously titled "Laser Induced Shock Waves and Vaporization in Biological Systems and Material Science."

Physicist Bernard Gerstman, author of the paper, writes:

Damage by pulsed lasers to the retina or other tissues containing strongly absorbing particles may occur through biophysical mechanisms other than simple heating. Shockwaves and bubbles have been observed experimentally, and depending on pulse duration, may be the cause of retinal damage at threshold fluence levels. We performed detailed calculations on the shockwave and bubble generation expected from pulsed lasers. For a variety of different laser pulse durations and fluences, we tabulated the expected strength of the shockwave and size of the bubble that will be generated. We also explain how these results will change for absorbing particles with different physical properties such as absorption coefficient, bulk modulus, or thermal expansion coefficient. This enables the assessment of biological danger, and possible medical benefits, for lasers of a wide range of pulse durations and energies, incident on tissues with absorbing particles with a variety of thermomechanical characteristics.
Gerstman has been studying laser interaction with eyes for many years — his main interest is in safety. But to figure out what makes lasers harm human eyes, he of course had to figure out exactly when and how that harm would occur. As Danger Room's David Hambling observes:
His findings may later be used by others with less humane motives — such as anyone interested in the anti-personnel possibilities of high-energy laser pulses which cause 'explosive bubble formation' in human flesh.
Indeed. Image via Laserforce.

Laser-Induced Shockwaves and Vaporization in Biological Systems [PDF] via Danger Room

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Fri, 02 May 2008 15:02:42 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=386790&view=rss&microfeed=true
<![CDATA[ We Can Predict When Stars Will Explode ]]> Need to get rid of a bunch of space trash, or jumpstart a wormhole? Now you can, at least if you can get near enough to a neutron star when it's heading into explosion mode. Using NASA's Rossi X-ray Timing Explorer (RXTE), some astronomers have made an extraordinary breakthrough: they've discovered how to predict when neutron stars will unleash massive explosions. What this means, in essence, is that stellar explosions can be compared to Old Faithful, the geyser in Yellowstone Park that erupts at precise times.

According to a release from NASA:

"We found a clock that ticks slower and slower, and when it slows down too much, boom! The bomb explodes," says lead author Diego Altamirano of the University of Amsterdam in the Netherlands.

The bursts occur on a neutron star, which is the collapsed remnant of a massive star that exploded in a supernova. The neutron star belongs to a binary system that can be described as a ticking time bomb. Hydrogen and helium gas from a companion star spirals onto the neutron star, slowly accumulating on its surface until it heats up to a critical temperature. Suddenly, the hydrogen and helium begin to fuse uncontrollably into heavier elements, igniting a thermonuclear flame that quickly spreads around the entire star. The resulting explosion appears as a bright flash of X-rays.

These bursts, which can occur several times per day from the same neutron star, release more energy in just 10 to 100 seconds than our Sun radiates in an entire week. Put another way, the energy is equivalent to 100 fifteen-megaton hydrogen bombs exploding simultaneously over each postage-stamp-size patch of the neutron star's surface.

Good to know for those long interstellar flights.

NASA satellite pins down time of explosions [Eurekalert]

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Wed, 30 Apr 2008 13:21:09 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=385853&view=rss&microfeed=true
<![CDATA[ Rudy Rucker's Math Orgy Classic "Sex Sphere" Gets Reissued ]]> boombyrudy.jpg We've written about scifi author Rudy "Postsingular" Rucker's forgotten 1980s classic The Sex Sphere before — it's the novel where a bunch of hypermatter creatures take the forms of blobs with breasts and genitals and try to conquer Earth. It almost works, too. Everybody gets so into having sex with the blobs that they become obedient alien slaves. Luckily, our heroes figure out a way to deal with the genitacular menace using extremely complicated math. Long out of print, the book is now about to be reborn as a print-on-demand deal. And Rucker has just released a picture of the book's new cover, which he painted himself. Check it out below (NSFW) — it must be seen to be believed.

That's a sex sphere alright.

35_thesexsphereflip.jpg
Rucker will be offering his novel Spacetime Donuts as a print-on-demand book too. Both should be out this summer. We'll let you know as soon as the URLs exist.

The Sex Sphere, etc. [Rudy's Blog]

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Fri, 18 Apr 2008 14:40:29 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=381666&view=rss&microfeed=true
<![CDATA[ Could a Fictional Character Win the Nobel in Physics? ]]> Opening in select U.S. theaters over the next few weeks, Dark Matter is a movie about physics gone wrong. No, the Hadron Collider doesn't punch a hole in reality. Instead, it's about a much smaller and more personal explosion that occurs when a young Chinese graduate student named Liu Xing comes to the U.S. to study cosmology, and finds out that science isn't about truth but politics. Based on a true story, Dark Matter explores what happens when Liu Xing's radical theories of dark matter in the early 1990s clash with those of his academic adviser. When he refuses to toe the line, his adviser disowns him and Liu Xing hurtles towards personal destruction. The premise is intriguing, and writer Billy Shebar based his main character's ideas on real theories about superstrings.

Shebar claims that the "dark matter particle" predicted by Liu Xing could turn out to be "the real dark matter present in the universe." If so, Shebar boasts, "he could become the first fictional character to win a Nobel Prize."

While those claims may be a little far-fetched, the film itself sounds like one of those rare moments where fiction about scientists turns out to be as strange and haunting as science fiction. Though not as surreal as Darren Aronofsky's Pi, the flick deals with some of the same clashes between science-for-truth and science-for-prestige. Check the Dark Matter site for details about when it will be coming to your city.

Dark Matter [official site]

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Mon, 14 Apr 2008 15:46:46 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=379648&view=rss&microfeed=true
<![CDATA[ Navy Initiates a Five-Year Plan to Build Laser Blasters ]]> Long range laser weapons that do more than make little red dots show up on distant objects have long been a dream of science fiction creators and the military alike. Now it looks like a true, long-range laser blasting weapon may be ready for action within the next five years. The Navy is ponying up cash for three defense contracts to build out a laser developed a few years ago at the Thomas Jefferson National Accelerator Facility. The laser, called a FEL (for "free electron laser"), can generate 10,000 watts of power, all across the visible spectrum. That means it could theoretically be optimized to shoot through fog or cloud. The Navy wants its current contractors to develop a prototype 100 kilowatt FEL, and then later one on the megawatt level. Noah Shachtman has all the details over at his Wired blog Danger Room. [Danger Room]

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Thu, 27 Mar 2008 10:45:12 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=373005&view=rss&microfeed=true
<![CDATA[ Physicists Say Lost Features Realistic Time Travel ]]> Last week, TV audiences boggled at one of the best Lost episodes in recent memory, where a character traveled through time guided somehow by his conscience. The twisty turns in the episode may have been surprising, but not nearly as shocking as what I'm about to tell you. The scientific basis for the time travel scenario in Lost is actually sound. An actual, practicing physicist told Popular Mechanics that the episode included several details that fit with what theoretical physicists think would be involved in timeskipping.

Says Popular Mechanics' Erin Scottberg:

Dr. Michio Kaku [wrote a] new book, "Physics of the Impossible," makes Lost's flip-flop between past and present look, well, not impossible.

Unlike deadly black holes, traversable wormholes could make a condition such as Desmond's feasible if the portals that skip time and space without an event horizon were ever discovered, Kaku says. When treating him remotely over Lost's super satellite phone, Faraday asks Desmond if he had been exposed to any extreme doses of radiation or electromagnetic energy that could make him "a little confused." And that's where the show's producers did their homework for the key plot twist when the helicopter sends Desmond's conscience to become unstuck in time.

"To open the wormhole, you need large amounts of energy," Kaku says. "In principle, if you could harness the energy of a star, you might be able to bend time into a pretzel, but we are talking about astronomical amounts of energy."

But that's exactly the kind of energy that Desmond may have been exposed to in a previous episode!

Are Lost's New Time-Travel Physics Junk Science? [Popular Mechanics]

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Wed, 05 Mar 2008 09:20:14 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=363899&view=rss&microfeed=true
<![CDATA[ Next Year, We'll Discover Alternate Dimensions ]]> One of the cool things we'll find out when Swizerland's supergiant particle accelerator starts up next year is what alternate dimensions look like. This is reason number 400 million that I love physicists, and the Hadron Collider: there is no "Are there alternate dimensions?" It's just: "What do they look like?" [Science Blog]

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Thu, 31 Jan 2008 16:05:34 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=351367&view=rss&microfeed=true
<![CDATA[ A Supermagnetic Tunnel Full of Subatomic Action ]]> Last year, before the gigantic hadron supercollider at CERN research facility was installed underground, a photographer captured this picture of a 1,950 metric ton tunnel containing giant magnets that will be placed in a tunnel and kept at near-zero temperatures. These mega-magnets are the biggest in the world, and will force subatomic particles to smash into each other. Want to see another one of the mega-magnets?

megamagnet.jpg Holy crap. Seriously, I am in awe. This is the world's largest superconducting solenoid magnet. I want one for the outside of my apartment building. Photos by Martial Terzzini/AP.

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Mon, 28 Jan 2008 07:00:13 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=349486&view=rss&microfeed=true
<![CDATA[ Proton Collisions Right Around the Corner ]]> The final piece of CERN's new ultra-giant hadron collider was lowered into its place deep underground today. Within weeks, protons will be smashing the shit out of each other underneath Swizerland. Nano-awesome! [Science Daily]

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Fri, 25 Jan 2008 07:30:47 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=348860&view=rss&microfeed=true
<![CDATA[ Magnetic Fusion in the Spherical Torus Experiment ]]> Right now, you are looking into a space where plasmas are crushed into a torus shape, subjected to a magnetic field, and then heated and pressurized until their nuclei fuse. It's called the National Spherical Torus Experiment. This glowing, sideways view of the chamber where plasmas undergo magnetic fusion was taken by Elle Starkman and Charles Skinner of the Princeton Plasma Physics Lab. Check out the exterior and a schematic for the chamber below (yes, several humans could fit inside it).

Here is the Spherical Torus from above in the Princeton Plasma lab:
nstxactual.jpeg

And here's a schematic to give you a better idea of what it looks like.
nstx_schematic_lg.jpg

Apparently plasma toroids are all the rage in physics circles right now, so it's time to get rid of all your old-fashioned plasma spheres and ovoids. Also, dear readers, if any physics geeks out there would care to explain the principles of magnetic fusion to us in layperson's terms we'd love to know.

National Spherical Torus Experiment

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Tue, 08 Jan 2008 10:40:10 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=342304&view=rss&microfeed=true
<![CDATA[ One Step Closer to a True Cloaking Device ]]> Last year, a team at Duke announced a beta cloaking material whose special nano-properties make it "invisible" to microwaves. Today, however, researchers in Stuttgart have got something even better — a "metamaterial" that can cloak objects in the visible light spectrum. Made of gold nano-mesh, the material has a negative refraction index for visible light — that means it doesn't reflect light, and could give the illusion of blending into the background. I can't wait for my metamaterial full body suit for doing futuristic spy shit. Towards Cloaking Visible Light [Science Daily]

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Mon, 24 Dec 2007 10:30:45 PST Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=337405&view=rss&microfeed=true
<![CDATA[ High-Tech Bubbles Trap Heat In Olympic Swimming Pool ]]> China is rushing to finish the 7,000 square foot "Water Cube" in time to host swimming events in the 2008 Olympics. This giant building's outer cladding, which will keep the pool warm, is based on research by physicists into "how soap bubbles might be arranged in infinite array," says architecture firm Arup. The bubbles themselves are made of a lightweight, transparent Teflon skin called ETFE, which will also make the building a super-efficient greenhouse, says Inhabitat. Images by EyePress/AP.

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Wed, 21 Nov 2007 16:00:00 PST charliejane http://io9.com/index.php?op=postcommentfeed&postId=325684&view=rss&microfeed=true
<![CDATA[ X-Ray Hackers Show Tinest Crystalline Structure Ever Seen ]]> What does this one-micron sized object look like to you? Despite what Freud would say, that boldly thrusting little guy is a microcrystal, once classified as a powder too tiny to be imaged using X-rays. But a bunch of European X-ray fiends have rigged up a special X-ray diffractor at the European Synchrotron Radiation Facility, and presto — what was once unseeable powder is now a crystal! This discovery means we can see crystals today that are 10 times smaller than ones we could see yesterday.

Knowing the crystalline structure of this chunk of microporous aluminium carboxylate — a crazy-ass hybrid compound of organic and inorganic molecules — is great for future research into things like using special powders to absorb toxic spills, or building flexible glass. But, points out scientist Thierry Loiseau, it will also help tidy up lab cupboards:

Researchers can now bring forward samples left in their cupboards because the sizes had previously prevented their study. Now they will be able to elucidate the structures of these samples, with potentially great scientific advances on the horizon.

Oh, oui, oui! Lavez les laboratoires, mes choux choux scientifiques!Image by T. Loiseau, CNRS 2007.

Unveiling the structure of microcrystals [via Eurekalert]

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Thu, 04 Oct 2007 08:42:10 PDT Annalee Newitz http://io9.com/index.php?op=postcommentfeed&postId=307102&view=rss&microfeed=true