Maybe you’re involved in a covert operation. Maybe you’re just curious. Spies have developed their own language of code words in order to keep from being discovered. We don’t need to know, but you should learn the 11 terms used by spies here.
Category: futurism
How to bend waves to arrive at the right place
Waves do not always spread uniformly into all directions, but can form a remarkable “branched flow.” At TU Wien (Vienna) a method has now been developed to control this phenomenon.
In free space, the light wave of a laser beam propagates on a perfectly straight line. Under certain circumstances, however, the behavior of a wave can be much more complicated. In the presence of a disordered, irregular environment a very strange phenomenon occurs: An incoming wave splits into several paths, it branches in a complicated way, reaching some places with high intensity, while avoiding others almost completely.
This kind of “branched flow” has first been observed in 2001. Scientists at TU Wien (Vienna) have now developed a method to exploit this effect. The core idea of this new approach is to send a wave signal exclusively along one single pre-selected branch, such that the wave is hardly noticeable anywhere else. The results have now been published in the journal PNAS.
Invisible threat to the Great Barier Reef
BREAKING NEWS: Microfibres from clothes and furniture are contaminating the #GreatBarrierReef, researchers from @AustralianMarineScience and the University of Copenhagen have discovered.
The team—Lene Jensen, Cherie Motti, Anders Garm, Hemerson Tonin and Frederieke Kroon—investigated microdebris from inside fish and surface waters on inshore and offshore areas of the reef.