Added bacterial film makes new mortar resistant to water uptake

Moisture can destroy mortar over time - for example when cracks form as a result of frost. A team of scientists at the Technical University of Munich (TUM) has found an unusual way to protect mortar from moisture: When the ...

Nano-magnets produce 3-D images

Conventional 3D displays, such as stereo displays with glasses and glass-free autostereoscopic displays, show two-dimensional images for each eye. Therefore, users experience incongruity and eyestrain owing to these pseudo-3D ...

Flow phenomena on solid surfaces

Physicists from Saarland University and the ESPCI in Paris have shown how liquids on solid surfaces can be made to slide over the surface a bit like a bobsleigh on ice. The key is to apply a coating at the boundary between ...

Image: 25 years ago, Voyager 2 captured images of Neptune

NASA's Voyager 2 spacecraft gave humanity its first glimpse of Neptune and its moon Triton in the summer of 1989. This picture of Neptune was produced from the last whole planet images taken through the green and orange filters ...

A mirror with a peephole

When light shines through air onto water, some of the light usually will be reflected back into the air. But at one specific angle, called the Brewster angle, all of the p-polarized light travels into the water with no reflection. ...

Rosetta:The comet takes shape, one pixel at a time

Rosetta's scientific imaging system OSIRIS is slowly but surely resolving comet 67P/Churyumov-Gerasimenko in its narrow angle camera (NAC), giving the first tantalising hints of its shape.

Lunar Reconnaissance Orbiter takes newest 'Earthrise' image

That's Earth. That's us. Way off in the distance as a fairly small, blue and swirly white sphere. This is the newest so-called "Earthrise" image, and it was taken on February 1, 2014 by the Lunar Reconnaissance Orbiter.

MESSENGER Surpasses 200,000 Orbital Images of Mercury

MESSENGER has now returned more than 200,000 images acquired from orbit about Mercury. The 1996 proposal for the mission promised a return of at least 1,000 images says Robert Gold, MESSENGER's Science Payload Manager. "We ...

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