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LAST NEWS

Tiniest lamp spans quantum, classical physics

Urchin writes "Physicists in California have made the smallest ever incandescent lamp using a carbon nanotube as the filament. The nanotube is so small it behaves as a quantum mechanical system but it's just large enough that the classical physics rules of thermodynamics should apply. Analyzing the light emitted from the tiny light will give the team a better picture of what happens in the twilight zone between the quantum and classical worlds." The New Scientist article doesn't mention the researchers' surprise, as the abstract does: "Remarkably, the heat equation and Planck's law together give a precise, quantitative description of the light intensity as a function of input power, even though the nanotube's small size places it outside the thermodynamic limit."


Tiniest lamp spans quantum, classical physics ,
Openbsd 4.5 released

portscan writes "OpenBSD 4.5 has been released. New and extended platforms include sparc64, and added device drivers. OpenSSH 5.2 is included, plus a number of tweaks, bugfixes, and enhancements. See the announcement page for a full list. OpenBSD is a security-oriented UNIX/BSD operating system." As per OpenBSD tradition, of course there's a song.


Openbsd 4.5 released ,
Bluetooth versus wireless mice

Meneguzzi writes "Having stuck with wired mice for years, I have recently been impressed by a couple of cordless mice I've used on other people's computers so much that I now want to buy one to use with my Mac Book Pro. However, while shopping around for the perfect cordless laptop mouse I was stuck with the question of whether to go for a bluetooth mouse or one of the many proprietary cordless mice with tiny USB receivers. To my surprise, there seems to be little literature systematically comparing these two options for attributes like precision, battery life (both for the mouse and the laptop), RF interference, and whatnot. As a Mac user, bluetooth has the advantage that it won't take up a USB port, and (in theory), would consume less battery than a USB port, but I wonder if this is actually true in practice. On top of that, I noticed that there are far fewer (and less fancy) options for Bluetooth mice than there are for proprietary cordless ones. Logitech, for instance, has a very basic Bluetooth Mouse, while its proprietary options are much fancier. So I was wondering what are the experiences from Slashdotters on this particular type of hardware, and any recommendations."


Bluetooth versus wireless mice ,
Bandwidth fines bad, but not net neutrality issue

Frequent Slashdot contributor Bennett Haselton writes with his take on the recent Time Warner Cable fiasco: "Net Neutrality crusaders at FreePress.net recently called attention to Time Warner's plan (later rescinded) to impose fines on users for going over bandwidth limits. I agree generally, but I think this is easily confused with the reasoning in favor of Net Neutrality, and it's important to keep the arguments separate." Read on for the rest of Bennett's thoughts.


Bandwidth fines bad, but not net neutrality issue ,
Mariners develop high tech pirate repellents

Hugh Pickens writes "NPR reports that owners of ships that ply the dangerous waters near Somalia are looking at options to repel pirates including slippery foam, lasers, electric fences, water cannons and high-intensity sound — almost anything except guns. One defense is the Force 80 squirt gun with a 3-inch nozzle that can send 1,400 gallons a minute 100 yards in any direction. 'It is a tremendous force of water that will knock over anything in its path and will also flood a pirate's ship very quickly,' says Roger Barrett James of the the Swedish company Unifire. Next is the Mobility Denial System, a slippery nontoxic foam that can be sprayed on just about any surface making it impossible to walk or climb even with the aid of a harness. The idea would be to spray the pirate's vessel as it approached, or to coat ropes, ladders, steps and the hull of the ship that's under attack. The Long Range Acoustic Device, or LRAD, a high-powered directional loudspeaker allows a ship to hail an approaching vessel more than a mile away. 'Knowing that they've lost the element of surprise is half the battle,' says Robert Putnam of American Technology Corp. The LRAD has another feature — a piercing "deterrent tone" that sounds a bit like a smoke detector alarm with enough intensity to cause extreme pain and even permanent hearing loss for anyone directly in the beam that comes from the device. But Capt. John Konrad, who blogs for the Web site Gcaptain.com, says no anti-pirate device is perfect. 'The best case scenario is that you find these vessels early enough that you can get a Navy ship detached to your location and let them handle the situation.'"


Mariners develop high tech pirate repellents ,
Ancient books go online

jd writes "The BBC is reporting that the United Nations' World Digital Library has gone online with an initial offering of 1,200 ancient manuscripts, parchments and documents. To no great surprise, Europe comes in first with 380 items. South America comes in second with 320, with a very distant third place being given to the Middle East at a paltry 157 texts. This is only the initial round, so the leader board can be expected to change. There are, for example, a lot of Sumerian and Babylonian tablets, many of which are already online elsewhere. Astonishingly, the collection is covered by numerous copyright laws, according to the legal page. Use of material from a given country is subject to whatever restrictions that country places, in addition to any local and international copyright laws. With some of the contributions being over 8,000 years old, this has to be the longest copyright extension ever offered. There is nothing on whether the original artists get royalties, however."


Ancient books go online ,
Exploring the current state of beta testing

Karen Hertzberg writes "Since the earliest days of MMO gaming, beta testing has played a pivotal role in the success or failure of our persistent worlds. We've come a long way since the initial tests of Ultima Online and The Realm, but what role do our current beta tests play in the potential outcomes of unreleased titles? To answer this question, Ten Ton Hammer turned to current and former beta decision makers at Cryptic Studios, NetDevil, Sony Online Entertainment, Funcom, and Mythic Entertainment. Some of their answers — and the information they reveal — may surprise you."


Exploring the current state of beta testing ,
Appeals court says riaa hearing can't be streamed

NewYorkCountryLawyer writes "The US Court of Appeals for the First Circuit has overturned a lower court order permitting webcast of an oral argument in an RIAA case, SONY BMG Music Entertainment v. Tenenbaum, in Boston. As one commentator put it, the decision gives the RIAA permission to 'cower behind the same legal system they're using to pillory innocent people.' Ironically, the appeals court's own hearing had been webcast, via an mp3 file. The court admitted that this was not an appropriate case for a 'prerogative writ' of 'mandamus,' but claimed to have authority to issue a writ of 'advisory mandamus.' The opinion came as a bit of a surprise to me because the judges appeared, during the oral argument, to have a handle on the issues. The decision gave me no such impression. From where I sit, the decision was wrong in a number of respects, among them: (a) it contradicted the plain wording of the district court rule, (b) it ignored the First Amendment implications, and (c) there is no such thing as 'advisory' mandamus or 'advisory' anything — our federal courts are specifically precluded from giving advisory opinions."


Appeals court says riaa hearing can't be streamed ,
Star trek premiere gets standing ovation, surprise showing in austin

MrKaos writes "Proving that science fiction can still be great entertainment, J.J. Abrams appears to have impressed Star Trek fans at the official world premiere of Star Trek, who gave the film a five-minute standing ovation at the Sydney Opera House in Australia today. Meanwhile, mere hours beforehand, flummoxed fans at the Alamo Drafthouse theater in Austin, TX, deceived into thinking they were seeing a special, extended version of Star Trek: The Wrath of Khan, were pleasantly surprised when a disguised Leonard Nimoy greeted them and announced they would be seeing the new film in its entirety. ILM's influence on the film is reported as visually stunning, and lucky Australian fans are scheduled to see the movie first, as it opens a day before the American release."


Star trek premiere gets standing ovation, surprise showing in austin ,
Google reveals "secret" server designs

Hugh Pickens writes "Most companies buy servers from the likes of Dell, Hewlett-Packard, IBM or Sun Microsystems, but Google, which has hundreds of thousands of servers and considers running them part of its core expertise, designs and builds its own. For the first time, Google revealed the hardware at the core of its Internet might at a conference this week about data center efficiency. Google's big surprise: each server has its own 12-volt battery to supply power if there's a problem with the main source of electricity. 'This is much cheaper than huge centralized UPS,' says Google server designer Ben Jai. 'Therefore no wasted capacity.' Efficiency is a major financial factor. Large UPSs can reach 92 to 95 percent efficiency, meaning that a large amount of power is squandered. The server-mounted batteries do better, Jai said: 'We were able to measure our actual usage to greater than 99.9 percent efficiency.' Google has patents on the built-in battery design, 'but I think we'd be willing to license them to vendors,' says Urs Hoelzle, Google's vice president of operations. Google has an obsessive focus on energy efficiency. 'Early on, there was an emphasis on the dollar per (search) query,' says Hoelzle. 'We were forced to focus. Revenue per query is very low.'"


Google reveals "secret" server designs ,
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