News tagged with ball

A new light wave

Hold a magnifying glass over the driveway on a sunny day and it will focus sunlight into a single beam. Hold a prism in front of the window and the light will spread out into a perfect rainbow. Lenses like these have been ...

dateAug 12, 2013 in General Physics
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What left these spooky trails in the sky?

Ball lightning? Spectral orbs? Swamp gas? Early this morning, May 7, these eerie glowing trails were seen in the sky above the Marshall Islands and were captured on camera by NASA photographer John Grant. Of course, if NASA's ...

dateMay 08, 2013 in Space Exploration
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Six Nations Rugby Union: Were the gloves off?

As the Six Nations Cup reached its patriotic climax, two University of Sheffield engineers were keeping a closely scientific eye on the ball. Experts in tribology—the science of friction—Drs Roger Lewis and Matt Carré ...

dateMar 18, 2013 in Engineering
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