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Power

Penny-Sized Nuclear Batteries Developed 444

pickens writes "Nuclear batteries that produce energy from the decay of radioisotopes are an attractive proposition for many applications because the isotopes that power them can provide a useful amount of current for hundreds of years at power densities a million times as high as standard batteries. Nuclear batteries have been used for military and aerospace applications for years, their large size has limited their general usage. But now a research team at the University of Missouri has developed a nuclear battery the size of a penny that could be used to power micro- and nano-electromechanical systems. The researchers' innovation is not only in the battery's size, but also that the batteries use a liquid semiconductor rather than a solid semiconductor. 'The critical part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure of the solid semiconductor,' says Jae Wan Kwon. 'By using a liquid semiconductor, we believe we can minimize that problem.' The batteries are safe under normal operating conditions. 'People hear the word "nuclear" and think of something very dangerous,' says Kwon. 'However, nuclear power sources have already been safely powering a variety of devices, such as pacemakers, space satellites, and underwater systems.'"
GUI

Firefox To Replace Menus With Office Ribbon 1124

Barence writes "Mozilla has announced that its plans to bring Office 2007's Ribbon interface to Firefox, as it looks to tidy up its 'dated' browser. 'Starting with Vista, and continuing with Windows 7, the menu bar is going away,' notes Mozilla in its plans for revamping the Firefox user interface. '[It will] be replaced with things like the Windows Explorer contextual strip, or the Office Ribbon, [which is] now in Paint and WordPad, too.' The change will also bring Windows' Aero Glass effects to the browser." Update: 09/24 05:01 GMT by T : It's not quite so simple, says Alexander Limi, who works on the Firefox user experience. "We are not putting the Ribbon UI on Firefox. The article PCpro quotes talks about Windows applications in general, not Firefox." So while the currently proposed direction for Firefox 3.7 involves some substantial visual updates for Windows users (including a menu bar hidden by default, and integration of Aero-styled visual elements), it's not actually a ribbon interface. Limi notes, too, that Linux and Mac versions are unaffected by the change.

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