Bruce Shark – Page 432 – Bruce Shark Swims

Fur my kitteh loving Bobbi Jo Woods

November 5, 2014 by Bruce Shark, posted in Bruce Shark

Fur my kitteh loving Bobbi Jo Woods

And because Squeak was posing.

I am a teeny leaf on the….blue towel…

November 5, 2014 by Bruce Shark, posted in Bruce Shark

I am a teeny leaf on the….blue towel…

So we don’t get much of the seasonal color change here, but this just happened.

Quarter for scale since banana was eaten by some thief…

Attention: Joan Laine because COLOR

Hey, look money Ben Zaitz

It’s teeny and cute Annemarie Zaitz

Dammit.

November 5, 2014 by Bruce Shark, posted in Bruce Shark

Dammit.

Just…whoa wow cool I guess and….

dammit.

Originally shared by Yi Yao

Robotic Micro-Scallops Can Swim Through Your Eyeballs

Yesterday, Nature Communications announced a robotic micro-scallop that can swim through your body (blood, joint fluid, eyeball goo, etc), all by themselves.

Unlike water, our blood is a non-Newtonian fluid which behaves differently depending on how much force you’re exerting on it. For example, when you mix water with corn starch and rapidly push on it, it will turn from liquid to nearly solid.

Although it might sound more complicated to swim through, it is actually an opportunity for robots.

At very small scales, robotic actuators tend to be simplistic and reciprocal. That is, they move back and forth, as opposed to around and around, like you’d see with a traditional motor. In water (or another Newtonian fluid), it’s hard to make a simple swimming robot out of reciprocal motions, because the back and forth motion exerts the same amount of force in both directions, and the robot just moves forward a little, and backward a little, over and over. Biological microorganisms generally do not use reciprocal motions to get around in fluids for this exact reason, instead relying on nonreciprocal motions of flagella and cilia.

However, if we’re dealing with a non-Newtonian fluid, this rule (it’s actually a theorem called the Scallop theorem) doesn’t apply anymore, meaning that it should be possible to use reciprocal movements to get around.

Right now, the micro-scallop is more of a “general scheme” for micro-robots rather than a specific micro-robot that’s intended to do anything specifically. Maybe one day they can simply be injected/swallowed into our body like swallowing a Tylenol.

via: http://goo.gl/3FjcIc

original article: http://goo.gl/Ty4Hkr

Mangrove jelly fish….

November 5, 2014 by Bruce Shark, posted in Bruce Shark

Mangrove jelly fish….

Whoa…..

Originally shared by Graf Spee

Die Andromeda Qualle (Cassiopeia andromeda), eine sogenannte Wurzelmundqualle, lebt auf Sandgrund zwischen Gras und Mangroven. Daher wird sie auch Mangrovenqualle genannt.