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Science

Mystery of the Shrunken Proton 171

ananyo writes "The proton, a fundamental constituent of the atomic nucleus, seems to be smaller than was previously thought. And despite three years of careful analysis and reanalysis of numerous experiments, nobody can figure out why. An new experiment published in Science only deepens the mystery. The proton's problems started in 2010, when research using hydrogen made with muons seemed to show that the particle was 4% smaller than originally thought. The measurement, published in Nature, differed from those obtained by two other methods by 4%, or 0.03 femtometers. That's a tiny amount but is still significantly larger than the error bars on either of the other measurements. The latest experiment also used muonic hydrogen, but probed a different set of energy levels in the atom. It yielded the same result as the Nature paper — a proton radius of 0.84 fm — but is still in disagreement with the earlier two measurements. So what's the problem? There could be a problem with the models used to estimate the proton size from the measurements, but so far, none has been identified. The unlikely but tantalizing alternative is that this is a hint of new physics."

Comment Give it 10 years (Score 1) 442

Consider the state of network technologies 10 years ago. There is so much that can be done in the last mile by actually deploying fiber, combined with up and coming high speed switching speeds that I don't think this will be a problem long.

Whether people want to invest another couple grand on a new display, that's another thing.

What they *can* do is put that kind of resolution on desktop displays. Please, enough with the "1920x1080 is high resolution" bullshit. We all had the ability to do 1600x1200 on CRTs over a decade ago.

Comment Re:Irony (Score 2) 201

I don't believe that's correct; if you are a US citizen, live outside the US and work outside the US, you are still liable to pay US taxes. Now, there is a fairly generous exclusion you can claim that, for most people, will completely nullify their tax obligation. But if you earn enough money (for 2011, the amount was US$92,900), you will still be liable for taxes on the marginal amount above the exclusion.

It's called the Foreign Earned Income Exclusion.

Comment Great idea, annoying controls (Score 1) 113

It's definitely an interesting game, but I found the controls particularly horrible. I understand why they are the way they are. Going from near light speed to a dead stop without any deceleration is rather unrealistic and vise verse. However, from the perspective of it being a "game" it was downright annoying.

Great concept, though, and definitely an interesting learning tool. It'd be even more fun if one could adjust the variables directly and and explore the consequences of those variables more deeply.

Comment Re:If you have to ask... (Score 1) 615

I worked on a project with a team in Chennai and we did it the opposite way; 7 AM Eastern, 5:30 PM Indian. Worked out pretty well, although sometimes it was a bit tough being put on the spot when they've been hammering on an issue all day and you're still groggy, wiping the sleep from your eyes.

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