By timothy from Slashdot's it's-only-tax-money department
writes Spaceflight has faded from American consciousness even as our performance in space has reached a new level of accomplishment. In the past decade, America has become a truly, permanently spacefaring nation. All day, every day, half a dozen men and women, including two Americans, are living and working in orbit, and have been since November 2000. Charles Fishman has a long, detailed article about life aboard the ISS in The Atlantic that is well worth the read; you are sure to learn something you didn't already know about earth's permanent outpost in space. Some excerpts:
"Life in space is so complicated that a lot of logistics have to be off-loaded to the ground if astronauts are to actually do anything substantive. Just building the schedule for the astronauts in orbit on the U.S. side of the station requires a full-time team of 50 staffers.
Almost anyone you talk with about the value of the Space Station eventually starts talking about Mars. When they do, it's clear that we don't yet have a very grown-up space program. The folks we send to space still don't have any real autonomy, because no one was imagining having to "practice" autonomy when the station was designed and built. On a trip to Mars, the distances are so great that a single voice or email exchange would involve a 30-minute round-trip. That one change, among the thousand others that going to Mars would require, would alter the whole dynamic of life in space. The astronauts would have to handle things themselves.
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By timothy from Slashdot's ok-but-nothing-beats-my-omnikey-or-model-ms department
writes As a power user, you notice certain things that the average person might not. One of those is the difference between typing on a sweet mechanical keyboard with luxurious key action, versus pounding away on a run-of-the-mill squishy plank that relies on membrane switches to register your keystrokes. The difference may seem subtle to the uninitiated, though even casual typists can recognize that there's something inherently superior about a mechanical keyboard. Of course, it's the mechanical key switches that are responsible for elevating the typing experience. These are better than the rubber domes found in membrane keyboards in a number of ways, including feel, responsiveness, and durability. Mechanical keyboards are growing in popularity, as word is spreading about how good they are. In turn, keyboard manufacturers have responded by feeding more mechanical models into what was once a niche market. If you go out in search of a mechanical keyboard, you'll now find a mountain of options. This roundup further reinforced something we've known for a long time, which is that mechanical keyboards are the superior choice for both gaming and daily typing chores. That doesn't mean they're all created equal — there are different key switches to choose from, and features vary from one plank to the next. The choice of key switch type is highly subjective but we can say that Cherry MX key switches are indeed of higher quality than knock-offs like the Kailh switch. That's not to say Kailh switches are bad, just that you can discern a difference when going from one to the other.Read Replies (0)
By timothy from Slashdot's as-punishments-go department
Convicted drunk drivers all over California may soon be required to install and pay for the use of ignition interlock devices
, at a cost of $50-100 per month, plus installation. Says the article: "State Sen. Jerry Hill, D-San Mateo, wants to expand a program already in place in four California counties, including Alameda, and 24 other states. Under the proposed state law Hill will introduce Monday, anyone convicted of driving under the influence would be required to install an ignition interlock device in their car for six months on a first offense and a year on a second conviction."
Though interlock devices could be fitted to check for other conditions as well, the usual case (as described on this Wikipedia page
) is that they base the ability to operate a car on blood alcohol content. Already in California, interlock devices are mandatory for those re-arrested for DUI while "driving on a suspended license due to a DUI conviction."Read Replies (0)
By timothy from Slashdot's fold-here-snip-there department
An anonymous reader writes The MeArm is a flat-pack robot arm. It has been developed in a very short time frame as the creators have been able to tap into crowd development by open sourcing all of the designs. Because of this it's exploded around the world with builders on every continent (bar Antarctica) and there are even people manufacturing them to sell in Peru, Taiwan and South Africa. MeArm manufacture them in the UK and export to distributors around the world, including Open Source pioneers like Adafruit and Hackaday in the USA. They're currently running a Kickstarter for a controller to take it out of the 'Hackersphere' and into the living room. They doubled their target in the first week and are still going strong so it's looking like they will be the first consumer flat pack robot kit in the world!
Controller or not, you can download the arm from Thingiverse
, and follow the project at Hackaday
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By timothy from Slashdot's don't-tell-the-trading-companies department
writes Phys.org reports that in a new paper accepted by the journal Astroparticle Physics, Robert Ehrlich, a recently retired physicist from George Mason University, claims that the neutrino is very likely a tachyon or faster-than-light particle. Ehrlich's new claim of faster-than-light neutrinos is based on a much more sensitive method than measuring their speed, namely by finding their mass. The result relies on tachyons having an imaginary mass, or a negative mass squared. Imaginary mass particles have the weird property that they speed up as they lose energy – the value of their imaginary mass being defined by the rate at which this occurs. According to Ehrlich, the magnitude of the neutrino's imaginary mass is 0.33 electronvolts, or 2/3 of a millionth that of an electron. He deduces this value by showing that six different observations from cosmic rays, cosmology, and particle physics all yield this same value within their margin of error. One check on Ehrlich's claim could come from the experiment known as KATRIN, which should start taking data in 2015. In this experiment the mass of the neutrino could be revealed by looking at the shape of the spectrum in the beta decay of tritium, the heaviest isotope of hydrogen.
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By timothy from Slashdot's am-I-being-detained department
Many public elementary- and middle-school students in Boston may soon have a longer time to spend in school each day
. A change, announced Friday by Boston mayor Martin J. Walsh, though yet to get final approval from the city's school committee and teachers' unions' full membership, would add 40 minutes to the schedule at schools not already under an extended schedule. Currently, most elementary school students have a 6-hour day, and middle school students' is 10 minutes longer, which means that high schools will now have by default the shortest day (six and a half hours) in the Boston public school system. From the Boston Globe's coverage:Teachers in the 60 schools would get an annual stipend of $4,464 for the expanded schedule, the mayor’s office said. The plan would be rolled out over three years, beginning with about 20 schools in the 2015-2016 school year, the statement said. Officials said it wasn’t clear which schools would be in the first group. Once fully rolled out, the plan, which would add up to about an extra month of learning per year for 23,000 students, would cost about $12.5 million per year.
How long is the school day in your neck of the woods, and do you think it should be any longer?Read Replies (0)