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
A new study estimated the untapped potential of wind energy across Europe.
- A new report calculated how much electricity Europe could generate if it built onshore wind farms on all of its exploitable land.
- The results indicated that European onshore wind farms could supply the whole world with electricity from now until 2050.
- Wind farms come with a few complications, but the researchers noted that their study was meant to highlight the untapped potential of the renewable energy source in Europe.
French newspapers report that the trial hasn't lived up to expectations.
- The French government initially invested in a rural solar roadway in 2016.
- French newspapers report that the trial hasn't lived up to expectations.
- Solar panel "paved" roadways are proving to be inefficient and too expensive.
You want one. Now you may be able to survive one.
Photo credit: Jie Zhao / Getty contributor
- Cats live in a quarter of Western households.
- Allergies to them are common and can be dangerous.
- A new approach targets the primary trouble-causing allergen.