Web 2.0 Goes To Work

"News.com is reporting on analyst predictions that Web 2.0 has begun meeting up with enterprise software in the business world." From the article: "Buttoned-down IBM, which mainly sells to businesses, on Wednesday detailed QEDwiki, for example. The project is meant to let people assemble Web applications using wikis, really simple syndication (RSS) and simple Web scripting. Similarly, the grassroots direct-marketing techniques of the consumer world are starting to be used to tout enterprise software, analysts said. The enterprise software market, once the hotbed of innovation, is starting to catch up to the consumer Web, where people are becoming used to melding data from their desktop with services online. It's a shift that could shake up the traditional enterprise-software model, experts predicted. "

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Does light have mass?

The short answer is "no", but it is a qualified "no" because there are odd ways of interpreting the question which could justify the answer "yes". Light is composed of photons so we could ask if the photon has mass. The answer is then definitely "no": The photon is a massless particle. According to theory it has energy and momentum but no mass and this is confirmed by experiment to within strict limits. Even before it was known that light is composed of photons it was known that light carries momentum and will exert a pressure on a surface. This is not evidence that it has mass since momentum can exist without mass. [ For details see the Physics FAQ article What is the mass of the photon? ]. Sometimes people like to say that the photon does have mass because a photon has energy E = hf where h is Planck's constant and f is the frequency of the photon. Energy, they say, is equivalent to mass according to Einstein's famous formula E = m

Play against Xbox360 gamer on PC in Vista

Microsoft Corp. co-founder Bill Gates on Tuesday announced a cross-platform gaming service that integrates games played on cell phones, Xbox 360 consoles and the upcoming Windows Vista operating system. The "Live Anywhere" service will be available as part of Windows Vista, Microsoft's next-generation PC operating system. The consumer version is scheduled for release early next year. "It means that you have one online community," Gates said in a news conference. "This platform can really unleash developers to do amazing new things." The system would extend the company's existing Xbox Live service for the Xbox 360 console into millions of Internet-enabled PCs and cellular phones. No pricing information on the new service was announced. In recent months, Microsoft has been pushing a number of online services that it hopes will boost revenue as markets for its traditional software become increasingly saturated. The company expects to make money off s

Hackers biting Apple

Hackers are increasingly focusing on Apple's Mac OS X, and the number of newly discovered vulnerabilities has surged. Such a switch could mean big implications for Apple's user base, which has traditionally not had to concern itself too much over security. It's been an impressively quiet year so far on the PC virus and worm front, and hackers seem to be focusing their attention elsewhere. One such area is Apple's Mac OS X. Once mostly ignored by malware developers, there appears to be a growing interest in this "alternative" OS. Details Have you noticed the dearth of serious PC virus and worm threats out there lately? Well, it isn't a figment of your imagination -- according to vnunet.com, viruses are no longer the top security threat . While serious attacks are still likely to emerge, the bottom has apparently fallen out of the PC antivirus market -- just as Microsoft begins a big push into the security market. One cause of this drop-off is solidif

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