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 veryhotthread  Author  Topic: Stuff & Nonsense  (Read 112968 times)
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« Reply #13155 on: Jul 30th, 2015, 08:16am »

GOOD MORNING CRYSTAL ~ CASEBOOK cool

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« Reply #13156 on: Jul 30th, 2015, 08:50am »

GOOD MORNING SWAMPRAT, Z, SYS & ALL OF OUR UFOCASEBOOKERS cheesy





~

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xx Re: Stuff & Nonsense
« Reply #13157 on: Jul 30th, 2015, 08:55am »

on Jul 30th, 2015, 08:16am, ZETAR wrote:
GOOD MORNING CRYSTAL ~ CASEBOOK cool

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SHALOM...Z


Hehe
Indeed Mr. Zetar As The World Turns..



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« Reply #13158 on: Jul 30th, 2015, 09:28am »

HeHe

Semper Fi



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« Reply #13159 on: Jul 30th, 2015, 11:19am »

on Jul 30th, 2015, 09:28am, Swamprat wrote:
HeHe

Semper Fi



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That'll learn 'im grin
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« Reply #13160 on: Jul 30th, 2015, 3:30pm »

IT'S GONNA GET VERY INTERESTING... cool

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« Reply #13161 on: Jul 31st, 2015, 07:51am »

GOOD MORNING CRYSTAL ~ CASEBOOK ~ cool

MOUNT KILIMANJARO...

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« Reply #13162 on: Jul 31st, 2015, 08:41am »

on Jul 30th, 2015, 09:28am, Swamprat wrote:
HeHe

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« Reply #13163 on: Jul 31st, 2015, 08:45am »

GOOD MORNING ALL cheesy


Science Daily

Robotic insect mimics Nature's extreme moves

Date: July 30, 2015
Source: Wyss Institute for Biologically Inspired Engineering at Harvard

The concept of walking on water might sound supernatural, but in fact it is a quite natural phenomenon. Many small living creatures leverage water's surface tension to maneuver themselves around. One of the most complex maneuvers, jumping on water, is achieved by a species of semi-aquatic insects called water striders that not only skim along water's surface but also generate enough upward thrust with their legs to launch themselves airborne from it.

Now, emulating this natural form of water-based locomotion, an international team of scientists from Seoul National University, Korea (SNU), Harvard's Wyss Institute for Biologically Inspired Engineering, and the Harvard John A. Paulson School of Engineering and Applied Sciences, has unveiled a novel robotic insect that can jump off of water's surface. In doing so, they have revealed new insights into the natural mechanics that allow water striders to jump from rigid ground or fluid water with the same amount of power and height. The work is reported in the July 31 issue of Science.

"Water's surface needs to be pressed at the right speed for an adequate amount of time, up to a certain depth, in order to achieve jumping," said the study's co-senior author Kyu Jin Cho, Associate Professor in the Department of Mechanical and Aerospace Engineering and Director of the Biorobotics Laboratory at Seoul National University. "The water strider is capable of doing all these things flawlessly."

The water strider, whose legs have slightly curved tips, employs a rotational leg movement to aid it its takeoff from the water's surface, discovered co-senior author Ho-Young Kim who is Professor in SNU's Department of Mechanical and Aerospace Engineering and Director of SNU's Micro Fluid Mechanics Lab. Kim, a former Wyss Institute Visiting Scholar, worked with the study's co-first author Eunjin Yang, a graduate researcher at SNU's Micro Fluid Mechanics lab, to collect water striders and take extensive videos of their movements to analyze the mechanics that enable the insects to skim on and jump off water's surface.

It took the team several trial and error attempts to fully understand the mechanics of the water strider, using robotic prototypes to test and shape their hypotheses.

"If you apply as much force as quickly as possible on water, the limbs will break through the surface and you won't get anywhere," said Robert Wood, Ph.D., who is a co-author on the study, a Wyss Institute Core Faculty member, the Charles River Professor of Engineering and Applied Sciences at the Harvard Paulson School, and founder of the Harvard Microrobotics Lab.

But by studying water striders in comparison to iterative prototypes of their robotic insect, the SNU and Harvard team discovered that the best way to jump off of water is to maintain leg contact on the water for as long as possible during the jump motion.

"Using its legs to push down on water, the natural water strider exerts the maximum amount of force just below the threshold that would break the water's surface," said the study's co-first author Je-Sung Koh, Ph.D., who was pursuing his doctoral degree at SNU during the majority of this research and is now a Postdoctoral Fellow at the Wyss Institute and the Harvard Paulson School.

Mimicking these mechanics, the robotic insect built by the team can exert up to 16 times its own body weight on the water's surface without breaking through, and can do so without complicated controls. Many natural organisms such as the water strider can perform extreme styles of locomotion -- such as flying, floating, swimming, or jumping on water -- with great ease despite a lack of complex cognitive skills.

"This is due to their natural morphology," said Cho. "It is a form of embodied or physical intelligence, and we can learn from this kind of physical intelligence to build robots that are similarly capable of performing extreme maneuvers without highly-complex controls or artificial intelligence."

The robotic insect was built using a "torque reversal catapult mechanism" inspired by the way a flea jumps, which allows this kind of extreme locomotion without intelligent control. It was first reported by Cho, Wood and Koh in 2013 in the International Conference on Intelligent Robots and Systems.

For the robotic insect to jump off water, the lightweight catapult mechanism uses a burst of momentum coupled with limited thrust to propel the robot off the water without breaking the water's surface. An automatic triggering mechanism, built from composite materials and actuators, was employed to activate the catapult.

To produce the body of the robotic insect, "pop-up" manufacturing was used to create folded composite structures that self-assemble much like the foldable components that "pop-up" in 3D books. Devised by engineers at the Harvard Paulson School and the Wyss Institute, this ingenious layering and folding process enables the rapid fabrication of microrobots and a broad range of electromechanical devices.

"The resulting robotic insects can achieve the same momentum and height that could be generated during a rapid jump on firm ground -- but instead can do so on water -- by spreading out the jumping thrust over a longer amount of time and in sustaining prolonged contact with the water's surface," said Wood.

"This international collaboration of biologists and roboticists has not only looked into nature to develop a novel, semi-aquatic bioinspired robot that performs an new extreme form of robotic locomotion, but has also provided us with new insights on the natural mechanics at play in water striders," said Wyss Institute Founding Director Donald Ingber, M.D., Ph.D.

http://www.sciencedaily.com/releases/2015/07/150730162446.htm#

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« Reply #13164 on: Jul 31st, 2015, 08:47am »








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« Reply #13165 on: Jul 31st, 2015, 2:18pm »

CASEBOOK ~ WHEN YA NEED TO CATCH A RIDE TO ENLIGHTENMENT... cool

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« Reply #13166 on: Jul 31st, 2015, 7:25pm »

Researchers find a rock with a carving of a Mastodon at the underwater Stonehenge of Lake Michigan

July 31st, 2015

Another incredible discovery has been made as researchers have found a rock with a carving of a Mastodon at the underwater Stonehenge of Lake Michigan.

In 2007, at a depth of twelve meters, researchers found a peculiar set of aligned stones that are believed to be over 10,000 years old.

While searching for shipwrecks, archaeologists from the Northwestern Michigan College came across something interesting at the bottom of lake Michigan. Mysteriously aligned rocks which were placed there by human beings before the area was covered with water. When the discovery was made, researchers couldn't believe what they were seeing. Its America's Stonehenge.

According to researchers, the stones located at the bottom of Lake Michigan all measure the same distance across, something that wouldn't be present if we were looking at a natural formation. The rock formation found at the bottom of Lake Michigan resembles other structures found in England and France, and even those at Nabta Playa, making it very unlikely to be a natural formation.

As if the mysterious rock formation wasn't enough, after a diving expedition to look at the stones, underwater photographer Chris Doyle found a mysterious stone with an incredible depiction: A Mastodon. This means that the carving must have been made way before the Mastodons were extinct.


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The Mastodon rock is perhaps one of the most incredible features of the underwater Stonehenge. Researchers speculate that the rock is made out of granite, a very hard material. For people to carve something onto this rock, they had to use a tool harder than granite. So the logical question is: What could ancient mankind have used 10.000 years ago to carve something onto a granite rock?

Researchers stress that the marks and lines that make out the mastodon figure were precisely carved, the lines were not just "scratched" onto the rock.

The incredible rock formation and the precisely aligned stones circles clearly indicate a man-made structure. The areas around Michigan are witnesses of early human presence in the American continent which is believed to date back over 25.000 years. In the distant past, the Lake itself did not exist since an Ice Age ruled over the lands and what is not located at the bottom of one of the five Great Lakes of north America, was located on dry land.

The man responsible for this incredible underwater discovery is Mark Holley, professor of underwater archeology at the Northwestern Michigan College. In 2007, he searched for shipwrecks but found, 12 meters below the surface a series of stones arranged in a circle. Adding to this amazing discovery is a relatively large rock which has, on its surface a depiction of a mastodon, an animal that became extinct around 8000 BC.

In the region near Lake Michigan, researchers have previously discovered menhirs and petroglyphs. When the first Europeans arrived in the seventeenth century they found that Michigan had thousands of prehistoric mounds. Scholars also found "sacred stones" across the geography of the Great Lakes, stones according to the natives were placed by another race who lived there before. Statues and stone idols erected in various parts were discovered weighing over 100 kilograms.

The underwater Stonehenge of Lake Michigan must have been created before the last Ice Age, when the lake bed was dry and that is, according to researchers, over 12.000 years ago, a time that according to history, mankind couldn't erect such elaborate constructions.

http://www.ewao.com/a/1-researchers-find-a-rock-with-a-carving-of-a-mastodon-at-the-underwater-stonehenge-of-lake-michigan

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« Reply #13167 on: Jul 31st, 2015, 7:59pm »

Nice catch Swamp!
That don't look like peridolia periwinkles whatever to me.
cheesy


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« Reply #13168 on: Jul 31st, 2015, 10:55pm »

cool

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« Reply #13169 on: Aug 1st, 2015, 03:08am »

on Jul 31st, 2015, 10:55pm, ZETAR wrote:
cool

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That was an amazing feat Z ..definitely a Type A personality.. grin
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