scientist
It may be Microsoft's time to feel a little smug. For years Redmond has been the butt of jokes --- and curses --- for the vulnerability its systems seemed to have to viruses. Now Linux has fallen prey to a nasty bug of its own, one that has created a giant peer-to-peer attack network from thousands of infected Linux Web servers. Only computer systems running both Apache Web server software and the Linux operating system are vulnerable, New Scientist reports. But that's a heck of a lot of machines. Once installed on a machine, the Linux.Slapper.Worm tries to forward itself on to other computers. "But unlike many other worms, it also tries to establish connections with computers that have already been infected," the magazine reports. The bug was first identified Friday, and though characterized by computer security firms as slow-moving, has so far infected an estimated 3,500 machines. In a note accompanying the worm, the author says it was designed as a proof-of-concept for "educational" purposes and should not be used for destructive attacks.
The good thing about using silicon in electronic components is that it is abundant and easy to dope with other materials to help control how electrons flow through it. The bad thing is that it becomes unstable at high temperatures, say above 150C. Diamonds are also pretty easy to dope, and can handle temperatures up to 400C with ease, but natural diamonds are lousy with impurities that can ruin electric flow. And man-made ones are comprised of many small crystals whose borders likewise interfere with a circuit's feng shui. But New Scientist reports today that researchers have developed a synthetic diamond film comprised of a single crystal that may be terrific for chips and such. "In the short term, the new diamond electronic components are likely to be too expensive to replace everyday silicon chips, which in any case work well for many applications. But diamond components may be useful in specialised applications," the magazine says. Likely uses include flat panel displays, big radar systems and space craft.
Proving again that clever sloth trumps dull industriousness, a mischievous group of transistors at a British university has spontaneously converted itself into -- of all things -- a radio receiver.
No word yet if the transistors are next planning to materialize as headphones or a graphic equalizer. New Scientist reports that the recreating of century-old technology occurred at the University of Sussex in Brighton during an experiment that was unusual in its own right. Researchers took transistors, added an evolutionary computer program and were expecting to end up with an oscillator -- a repeating sign wave signal.
Instead of forming their own waves, though, the transistors utilized a part on a nearby circuit board as an antenna and began receiving the oscillations from an adjacent computer. Somewhere out in the ether, Guglielmo Marconi ought to be proud. And slackers everywhere, too.
A Texas scientist has discovered that a special metal coating could allow contact lens wearers to keep their lenses in for longer periods of time. Coating contacts with a one-molecule-thick layer of selenium, an antibacterial metal, keeps them bacteria-free for at least two months, says Ted Reid of Texas Tech University Health Sciences Center in Lubbock. Although selenium can be toxic to humans in large quantities, these lenses would apparently be safe, with less selenium than you'd find in an average lunch. Reid hopes the coating could be used on other internal devices, like heart valves and catheters, and even suggests selenium-coated molecules could be used to keep people exposed to HIV from becoming infected. In other eye news, new eye-tracking software developed by scientists at Cambridge University could help computer users with disabilities write more quickly, accurately, and comfortably than before.
New Scientist says that a military attack on Iraq could see the first use of an e-bomb designed to destroy electronics but not harm people. U.S. intelligence reports that Iraq has moved much of its military infrastructure underground or beneath civilian buildings like hospitals. As such, the magazine says, the role of non-lethal and precision weapons would be a critical factor in any conflict. The U.S. reportedly has in its arsenal High Power Microwave (HPM) devices that produce an electromagnetic field so strong they can destroy electronic equipment in hardened command, control, communications and computer targets. One mechanism for achieving this sounds like something out of "Back to the Future": An explosive pumped flux generator. That device is essentially a bomb which with a combination of explosives and electronics, sends out an electromagnetic wave of up to tens of millions of Amps. By comparison, a typical lightning strike --- which can wreak plenty of damage on its own --- carries just 30,000 Amps.
John Mahoney writes: "Noted computer scientist Edsger Wybe Dijkstra died on August 6, 2002." Here's a link to what looks like a university obituary on Dijkstra and here's part of what CNET's News.com had to say about him: "Dijkstra was on the committee that created Algol, the first block-structured programming language and one that introduced many ideas behind Pascal, Basic and C. His practical skills, especially in discerning and coding algorithms, were also remarkable--he wrote the first Algol 60 compiler. Other ideas he invented or helped define include structured programming, stacks, vectors, semaphores, synchronized processes and the notorious deadly embrace--feared by multitasking programmers the world over--where two processes both stop while they wait for each other to continue."
Richard Feynman once said that all the information in all the books in the world could theoretically fit in a cube 1/200th of an inch on a side. Looks like he got it right, says Technology Research News. Reporting on advances in data storage, the magazine says researchers at the University of Wisconsin, Madison have demonstrated the successful use of single silicon atoms to represent the ones and zeroes that are modern data storage. The result, in theory, is the ability to store the equivalent of 7,800 DVDs in one square inch of material. Engineering limitations mean writing atomic bits is impractically slow at the moment. But the Madison work is a realistic analysis of bit stability and recording density, says one scientist who has examined the work.
Oh, to be as well-regarded and useful as recently departed polymer chemist William Mallow. Mallow, the man credited with inventing clumping cat litter and perfecting Liquid Paper, was remembered this week by family and friends as a scientist with a knack for practicality. In addition to litter and white-out, Mallow worked on the space shuttle's heat-resistant tiles, developed a way to artificially age Scotch whiskey and improved the rubber skin used on robot dinosaurs at Walt Disney World, Reuters reports.
"He was a people's chemist," said Dr. Robert Bass, a colleague at the Southwest Research Institute. While at the institute, Mallow also helped Liquid Paper inventor Bette Nesmith Graham perfect the white goo. (Nesmith Graham, it should be noted, is the mother of former Monkees member Michael Nesmith).
Mallow's latest project was a military-grade slip-n-slide gel called the Mobility Denial System. Meant to foil attacks on government buildings and control crowds, "it can be sprayed on any surface and causes people to slip and fall and prevents vehicles from getting traction."
Mallow, a native of Akron, Ohio, died of leukemia at age 72 in a San Antonio hospital on Tuesday, Reuters says.
Boeing has joined a small group of technology bigwigs trying to test a theory that would let engineers negate some of the effects of gravity. The American aerospace giant is using the work of controversial Russian scientist Yevgeny Podkletnov, who claims to have developed a device that can shield objects from the Earth's pull. Other researchers claim Podkletnov's work is hokum, but considering the cost savings such a device would represent for air travel, Boeing seems intent on getting to the bottom of it all. The Russian says he found that objects above a superconducting ceramic disc rotating over powerful electromagnets lost weight, the BBC reports. "The reduction in gravity was small, about 2 percent, but the implications --- for example, in terms of cutting the energy needed for a plane to fly --- were immense."
