27/02/2009

Nano-sonar uses electrons to measure under the surface

Just as sonar sends out sound waves to explore the hidden depths of the ocean, electrons can be used by scanning tunnelling microscopes to investigate the well-hidden properties of the atomic lattice of metals. As researchers ...

Nikon DSLRs can give eye-opening results

I am no camera buff. I bought my first digital camera only three years ago, and I often prefer to use the 2-megapixel camera in my iPhone than carry around another gadget.

Recognizing an unheralded pioneer in Mac-happy Silicon Valley

Carl Clement doesn't want to whine and moan about it, he's just saying. He's just saying that before there was the Apple Macintosh and its recent and much-heralded 25th anniversary, there was the Xerox Alto. And he and his ...

Home sets example for environmentally friendly living

When Larry and Lauri Kraft decided to add a great room and three-season porch to their 1959 split-level home in St. Louis Park, Minn., they chose "green" remodeling to protect their children's health.

More older users heading for their keyboards

Loretta Velliky of Dearborn, Mich., started learning to use a computer after her husband died in September 2005. "My husband had a computer, and after he passed, my daughter said, 'Mom, get on it!'" Velliky said. "She showed ...

Pretty Sky Alert

Be careful, this sort of thing can cause an accident. On Friday evening, Feb. 27th, the 10% crescent Moon will glide by Venus, forming a gorgeous and mesmerizing pair of lights in the sunset sky.

Intelligent use of the Earth's heat

Geothermal energy is increasingly contributing to the power supply world wide. Iceland is world-leader in expanding development of geothermal utilization: in recent years the annual power supply here doubled to more than ...

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