NASA Satellite Map Shows 99% Of Earth’s Land Surface

NASA Satellite Map Shows 99% Of Earth’s Land Surface

The map uses 1.3 million images and covers Earth’s land surface between 83 degrees North and 83 degrees South latitudes 

An astonishing new map has revealed the elevation of nearly every place on Earth.

The Global Digital Elevation Model was created using nearly 1.3million images collected by a Japanese camera on board Nasa’s Terra spacecraft. It is made up of a giant grid of 23,000 tiles, with each height point spaced 98ft apart. (Pics)

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Why Do We Have Fingerprints?

Why Do We Have Fingerprints? 

Why do people have fingerprints?

Fingerprints do not help primates grip, as previously thought, scientists have discovered. They actually reduce the friction needed to hold onto flat surfaces. Now Dr Roland Ennos and his team at The University of Manchester are trying to find out: why do we have them?

Dr Ennos, at the University’s Faculty of Life Sciences, said: “I have been thinking about this for years and, having played around with it for a bit, realised that skin is rubbery so the ridges in fingerprints might actually reduce grip.

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Making Materials That Repel All Liquids

Making Materials That Repel All Liquids 

 Water (dyed blue) and hexadecane (dyed red), an oil, bead up on an omniphobic surface, which repels all liquids.

Materials under development at MIT could lead to coatings that repel both water and oil. A group of MIT researchers have created an improved set of design rules for making any surface impervious to any liquid, be it water or gasoline. Such materials could eventually have promise as fingerprint-repelling coatings, fuel filters, self-washing car paints, and stain-resistant clothing.

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Multi-Touch Surface PC Table

 [youtube]http://www.youtube.com/watch?v=DG3_2lvoL8A[/youtube]

 

For it’s latest trick, Microsoft’s engineers have given the multi-touch Surface PC table a bartender’s sixth sense. If you set your drink down on top of it, the Surface will be able to detect just how full it is. At least, if it’s in a special glass.

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The Slicer – All Season Sled

The Slicer - All Season Sled 

 Featured Invention at the Colorado Inventor Showcase

For snow sledding, the SLICERTM works like any normal sled that is placed on a slope that is covered with snow or ice. But to slide down grass covered slopes, just the opposite is done: instead of putting the SLICERTM on the snow or ice, ice is put on the bottom of the SLICERTM!

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