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World’s Smallest Nerf Gun Shoots an Ant

BSR says...

Thanks a lot Mark. You figured out how to weaponize army ants. No picnic is safe now. Way to go traitor!

ant, please forgive me if I have ever pissed you off. My bad, buddy.

Reindeer Cyclone

w1ndex (Member Profile)

Army Ant Death Spiral

Army Ant Death Spiral

Zawash jokingly says...

Of course, this is from southern Ecuador. On the part of Equador north of the equator they go clockwise. This is why so few army ants are found in the arctic regions, where the coriolis effect is much stronger.

Vexus (Member Profile)

Mysterious video of ants circling an iPhone

Behold The Majesty of Simcity GlassBox Simulation

Ants In Silver Space Suits | Africa

The Army Ant from the BBC's Life in the Undergrowth ...

Ant Army Invasion! - Wild South America - BBC

The Army Ant from the BBC's Life in the Undergrowth ...

ant says...

>> ^Sagemind:

We caught a Huge Black Widow Spider and put it in a jar.
My kids, wanting to feed the spider, put 7-10 ants in the jar with her.
Ten minutes later, the the black widow was curled up on the bottom of the jar - Dead!
Now which one is scarier!


Ants FTW!

Have You Ever Seen An Ant HURRICANE?

legacy0100 says...

The person off the camera shot sounded Japanese, and I don't know if Army ants are found in Japan. I thought they live in the Amazon and Australia?

Anyways, the camera was very shaky and wasn't focused well so we couldn't see it clearly.

Perhaps they were doing a ritual mating dance on the floor. They usually fly up and circle around the queen when in flight. Sometimes the queen fails to take off but the males continue to circle around her anyway. And I think this is one of those cases.

Have You Ever Seen An Ant HURRICANE?

ant says...

http://theantroom.blogspot.com/2006/11/ant-death-spiral.html (not mine -- linked from YouTube video).

"This is one of my favorite things about ants -- the ant death spiral. Actually, it's a circular mill, first described in army ants by Schneirla (1944). A circle of army ants, each one following the ant in front, becomes locked into a circular mill. They will continue to circle each other until they all die. How crazy is that? Sometimes they escape, though. Beebe (1921) described a circular mill he witnessed in Guyana. It measured 1200 feet in circumference and had a 2.5 hour circuit time per ant. The mill persisted for two days, "with ever increasing numbers of dead bodies littering the route as exhaustion took its toll, but eventually a few workers straggled from the trail thus breaking the cycle, and the raid marched off into the forest."

Folks interested in things like self-organization, emergant properties, complex systems, etc. etc. like to point to this as a cautionary tale. I even found a reference to a group programming robots to interact like ants that accidentally produced this behavior in their robots. Apparently you can also reproduce this behavior in the lab by placing a glass jar into the surface. The ants will eventually circle the jar and continue to do so even after the jar has been removed. I assume just army ants. Wow, I wish we had an army ant colony in the lab."

National Geographic - Paper Wasps



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