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Scientists Discover the Secret Behind Incredible Ant Towers. Ants, through their Borg- like powers, are capable of performing complex cooperative feats that make solitary insects look useless. In an extraordinary example of this collective behavior, researchers have shown how fire ants, when confronted by a barrier, swarm together to create towers with their bodies, allowing the lucky few at the tip of the structure to escape. Fire ants are famous for building massive ant towers, which allow them to escape or migrate into otherwise inaccessible areas.
New research published in Royal Society Open Science details exactly how the ants build and maintain these perpetually sinking structures. They do so autonomously, in the absence of any centralized coordination. Instead, they rely on a simple set of rules that, at the group level, results in the construction of a tower. This hive- mind behavior may not help each and every ant involved, but it’s a classic case where the needs of the colony outweighs the needs of the one. Ants are amazing at co- operation, using their bodies to form parts of chains, ladders, walls, and. The tower- building fire ants do a similar thing, searching for an empty spot in the structure to inhabit.
Once an ant finds a space—typically near the top of the tower—it stops moving, allowing another ant to climb on top. And so on and so forth, the tower grows vertically.
Ants, through their Borg-like powers, are capable of performing complex cooperative feats that make solitary insects look useless. In an extraordinary example of this. Video of the first ever handshake between Donald Trump and Vladimir Putin, which was posted to Facebook (Bundesregierung/Facebook) President Donald Trump and Russian.
The Georgia Tech researchers documented these behaviors by setting up a lab experiment in which a colony of fire ants were placed in a dish, and forced to attempt an escape up a pole (the sides of the dish were laced in talc power to make it impossible for the ants to climb out). As the tower grows taller, it also gets wider. The weight of the structure is supported by a wider cross- section at the base, allowing the ants to smartly distribute their weight. Each ant can withstand about 7. Any more than that and they give up, breaking their holds and scuttling away. Microsoft Visio Network Diagram Tutoriales. Georgia Tech’s David Hu, the lead author of the study, along with co- author Craig Tovey, a professor in the Stewart School of Industrial & Systems Engineering, discovered—by accident—that the column sinks as the insects work.“We accidentally kept the video camera running for an hour after the tower had been completely built,” Tovey told Gizmodo.
Through the blur, you can see that the entire tower is slowly sinking.”To confirm the sinking behavior, Tovey and Hu contacted experts at at Lawrence Livermore Labs and other institutes. They were told that the technology did not exist to track individual particles in the interior of a three- dimensional object, at the time and size scales of ant- made towers, without killing the insects. But when they talked to an expert at Georgia Tech, they were referred to Daria Monaenkova, a postdoctoral researcher working in Dan Goldman’s physics lab. Monaenkova, who would subsequently become a co- author of the new study, happened to be working on an x- ray technology that would enable the researchers to peer inside the ant tower itself. Monaenkova worked with the researchers to get the right amount of radioactive iodine that could be ingested by the ants to make them more visible to the x- ray device, but not enough to be seriously toxic.“I should emphasize that this research was the first to use Daria’s novel techniques,” said Tovey. Unexpectedly, it seems the sinking is actually necessary to the maintenance of the overall structure. So, the ants at the top have no way of knowing that the tower building is complete.
They keep trying to build it higher. But there aren’t enough ants below to support a higher tower. So the tower gets physically unstable, the ants at the bottom layer of the tower leave and the rest of the tower sinks to fill in the missing space.”Using this method, an individual ant can rest for upwards of an hour, and then rejoin its comrades in the structure once it’s ready. Consequently, the ever- changing tower can last for hours—and possibly even days if need be. Tovey likens the behavior to fish who school in rivers as they swim upstream. These fish do what a team of bicycle riders do: they take turns being at the front of the school and taking the brunt of the current.
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- Ever notice how Christopher Nolan’s movies (Interstellar, Inception, The Prestige) feel like an anxiety attack? Well, maybe that’s overstating things a bit.
Then the ones at the front peel off and go to the back of the school, and so on. Tovey speculates that the ants are basically doing the same thing.
It’s still preliminary, but Tovey speculates that this behavior may be translatable to tiny, self- organizing robots. If a fleet of robots in a collapsed building needs to travel upwards, they might have to form a tower if the surface is too steep for them to climb individually. This study shows that very simple rules of individual movement can produce a useful structure.” Remember this the next time you see an ant aimlessly wandering around. Its seemingly tiny actions, unbeknownst to you, are contributing to the greater good of the hive.
The Uncanny Sound Illusion That Creates Suspense in Christopher Nolan's Movies. Ever notice how Christopher Nolan’s movies (Interstellar, Inception, The Prestige) feel like an anxiety attack? Well, maybe that’s overstating things a bit. But the director does have a knack for creating an unnerving degree of tension. Turns out he’s using a little bit of musical magic to do it.
The magic is actually a science- based audio illusion called a Shepard tone. Named after psychologist Roger Shepard, a pioneer in our understanding of spatial relation, the effect sounds like an infinitely ascending or descending scale. The tones are constantly moving upwards or downwards, but they never seem to reach a pinnacle or nadir. This is accomplished by stacking scales on top of each other—typically one treble scale, one midrange, and one bass—with an octave in between, then playing them in a continuous loop. A Shepard tone is sometimes referred to as the barber pole of sound. You can even see the similarity, when you hear it and look at the spectrum view of a Shepard tone. Don’t listen to this too long, or you might lose your mind: Anyways, Christopher Nolan just loves this.
With longtime collaborator Hans Zimmer, the acclaimed director has used a Shepard tone in almost every one of his films in the last decade. He even writes his scripts to match the effect. In a recent interview, Nolan explained how he used Shepard tones in his newest film, Dunkirk: The screenplay had been written according to musical principals. There’s an audio illusion, if you will, in music called a “Shepard tone” and with my composer David Julyan on “The Prestige” we explored that and based a lot of the score around that. And it’s an illusion where there’s a continuing ascension of tone. It’s a corkscrew effect. It’s always going up and up and up but it never goes outside of its range.
And I wrote the script according to that principle. I interwove the three timelines in such a way that there’s a continual feeling of intensity. Increasing intensity. So I wanted to build the music on similar mathematical principals.
Knowing this, you gain a deeper understanding of films like Interstellar, Inception, and The Prestige. It also explains why these films seem somehow inconclusive. A Shepard’s tone creates a conflict that can’t be resolved, just like Nolan’s plots.