Are we getting closer to building an invisibility cloak? According to new research out of Duke University, science may have built an early ancestor to the science fiction device.
Watch the video below of a demonstration of what's being called an "acoustic cloak." The Huffington Post has more:
Made of sheets of perforated plastic, the pyramid-shaped cloak changes the shape and speed of sound waves as they hit it. Those changes make the sound waves appear to reflect off the surface the pyramid is standing on, as though it wasn't there.
To build the cloak, Lucian Zigoneanu, Bogdan-Ioan Popa and Steven Cummer modeled the way sound waves act on a computer. They tried several simulated shapes, and eventually came up with the pyramid design, made with sheets that have holes in them.
Image credit: Dave Young/Flickr
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China's Chang'e 4 biosphere experiment marks a first for humankind.
- China's Chang'e 4 lunar lander touched down on the far side of the moon on January 3.
- In addition to a lunar rover, the lander carried a biosphere experiment that contains five sets of plants and some insects.
- The experiment is designed to test how astronauts might someday grow plants in space to sustain long-term settlements.
She met mere mortals with and without the Vatican's approval.
- For centuries, the Virgin Mary has appeared to the faithful, requesting devotion and promising comfort.
- These maps show the geography of Marian apparitions – the handful approved by the Vatican, and many others.
- Historically, Europe is where most apparitions have been reported, but the U.S. is pretty fertile ground too.
Arranged marriages and Western romantic practices have more in common than we might think.
In his book In Praise of Love (2009), the French communist philosopher Alain Badiou attacks the notion of 'risk-free love', which he sees written in the commercial language of dating services that promise their customers 'love, without falling in love'.
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