The quantum-logic clock, which detects the energy state of a single aluminum ion, keeps time to within a second every 3.7 billion years. The new timekeeper could one day improve GPS or detect the slowing of time predicted by Einstein’s theory of general relativity.[...]
Chou’s team is one of several racing to build an atomic clock that can replace the current international standard, the cesium fountain clock. The cesium clock loses one second every 100 million years. Chou’s is not the first quantum-logic clock, but his uses aluminum and magnesium ions, which makes it twice as precise as its predecessors that used aluminum and beryllium.
To keep time, quantum-logic clocks measure the vibration frequency of UV lasers. Unfortunately, the best lasers we can build veer off their normal frequency by about one tick every hour, Chou said. To keep the laser’s timekeeping precise, its vibration must be anchored to something much more stable.
John has worked for 17 years at Sumedicina. His salary rose steadily. But with the increasing responsibility, his hair became measurably less.
Deputies said Schaumburger fled down a street with a dead end at Lake Tarpon. With nowhere to go, authorities said he hijacked a docked pedal boat and tried to escape across the lake.
A Sheriff's Office helicopter was called in. According to the arrest report, the helicopter crew reported that "there was a lone male pedaling the boat dressed only in boxer shorts, and the boat appeared to be taking on water."
Deputies enlisted the help of resident Robert Putnam, whose pontoon boat was docked at the lake, to intercept Schaumburger.
The player points the gun at his or her own head and pulls the trigger. Instead of bullets, a pair of feet kick out from the barrel (which is shaped like a pink hippo). If the gun doesn’t fire, the player earns points.
In the current experiment, the researchers found that three other patients identified as vegetative showed similar responses. To open a channel of communication, they instructed one of them, the 29-year-old man, to associate thoughts about tennis with “yes” and thoughts about being in his house with “no.”
They then asked questions, repeating the procedure numerous times, switching the associations — tennis with yes, then with no — to make sure the patient was in fact making conscious choices. The researchers had previously tested the technique in healthy volunteers.
“We asked basic biographical questions, like ‘Is your father’s name Thomas?’ and ‘Have you ever been to the United States?’ ” said Adrian M. Owen, a neuroscientist at the Medical Research Council in Cambridge, England, who developed the method and was a co-author of the paper. “We then checked whether the answers were correct. They were.”
Researchers found his body on an imperial Roman estate and took dental samples. Why examine teeth? Well, the water you drink at birth leaves a distinct signature in your teeth. That water signature is in the form of oxygen isotopes, atoms of oxygen with different numbers of neutrons. Isotopes say something about the latitude and elevation of your birthplace—which in the case of our mystery man definitely wasn’t southern Italy.
Then the researchers tested his mitochondrial DNA, which is passed down through your maternal lineage. And this fellow had east Asian genes.
If the wasps don't do their duty, the trees respond by enacting a sanction — aborting their fruit, killing off the teeming mass of baby wasps. A new study of this killer tree phenomenon, published in Proceedings of the Royal Society B comes from Cornell University and The Smithsonian Tropical Research Institute, shows that negative reinforcement may be an important part of symbiotic relationships.
Pollination by wasp comes in two varieties: passive and active. With passive pollination the wasps carry pollen that happens to stick to their bodies; where with active pollination they collect pollen in special pouches to deliver to the flowers.
With the passive pairings, the fig trees abort their fruit far less often than with active pairs. In the actively pollinating groups, the tree species that tend to enforce sanctions less often have a higher occurrence of freeloader wasps, who take advantage of the figs without doing any of the work. Inversely, by using the sanction option more frequently, some fig species have a lower incidence of non-pollinating insects.
While Hello Kitty fanatics may see something like this as cute (you have to seriously feel for the lumberjack significant other that has to carry this around at work), for the rest of us it pretty much exemplifies what any horror movie villain (or the evil feline herself) would undoubtedly use to dismember victims. In fact, The Hello Kitty Chainsaw Massacre is probably already in production and is guaranteed to be the most horrifying movie that you have ever seen.
How might these trials have worked, without divine intervention? The key insight is that ordeals weren’t just widely practiced. They were widely believed in. It’s this belief - literally, the fear of God - that could have allowed the ordeals to function effectively.
First, consider the reasoning of the defendants. Guilty believers expected God to reveal their guilt by harming them in the ordeal. They anticipated being boiled and convicted. Innocent believers, meanwhile, expected God to protect them in the ordeal. They anticipated escaping unscathed, and being exonerated.
The only defendants who would have been willing to go through with the ordeal were therefore the innocent ones. Guilty defendants would have preferred to avoid the ordeal - by confessing their crimes, settling with their accusers, or fleeing the realm.
The next thing to understand is that clerics administrated ordeals and adjudged their outcomes - and did so under elaborate sets of rules that gave them wide latitude to manipulate the process. Priests knew that only innocent defendants would be willing to plunge their hands in boiling water. So priests could simply rig trials to exonerate defendants who were willing to go through with the ordeal. The rituals around the ordeals gave them plenty of cover to ensure the water wasn’t boiling, or the iron wasn’t burning, and so on. If rigging failed, a priest could interpret the ordeal’s outcome to exculpate the defendant nonetheless (“His arm is healing well!”).
