So we've heard about how fluids can have different viscosities and Newtonian fluids have constant viscosities, where as non-Newtonian fluids have viscosities that change depending on the shear rate or speed with which the object lives through them. Okay, that makes sense.......Go Fish!
Apparently in the future we are going to have micro robots swimming around inside of us with the mission to rid us of bad things. One application discussed is the repair of our eyes. The micro-scallops will gleefully swim in our eye fluid and zap any distortions that they find on the eyeball. Take that Cataract!
We have travelled a long way since scracthing fleas from our hairy bodies on those hot summer nights around the camp fire on the African veldt. Kumbaya!
Stephen van Vuuren - "This is fly-through of this photograph - photojournal.jpl.nasa.gov/catalog/PIA11141 - only a little brightness and contrast has been made to balance the moons with saturn's body. Do note that several thousand layers of many Cassini photographs were animated to make the fly-through work without any 3D CGI. The saturation is off due to lack of Flash Player ICM support."
That's one big snow-cone! As a giant snowstorm plowed across the U.S. this week, the GOES-13 weather satellite drifted 22,000 miles overhead, capturing all the snowy chaos in a single dramatic frame. The resulting image, pictured above, reveals just how big the storm became.
SYDNEY — Mankind may be descended from apes but Australian scientists have found proof of links much closer to the sea floor, with a study revealing that sea sponges share almost 70 percent of human genes. Read more at Goggle News.
To celebrate its 20th anniversary in orbit, NASA released a photo from the Hubble Space Telescope that captured a small breathtaking portion of one of the largest visible star-birth regions in the galaxy, the Carina Nebula. The image above shows the top of a three-light-year-tall pillar of gas and dust that is being eaten away by the brilliant light from nearby bright stars. The pillar is also being pushed apart from within, as infant stars buried inside it fire off jets of gas that can be seen streaming from towering peaks like arrows sailing through the air. Read more at Discovery.com.
Nature never deceives us, it is always we who deceive ourselves. - J.J. Rousseau Lightning streaks across the sky as lava flows from a volcano in Eyjafjallajokul April 17, 2010. (REUTERS/Lucas Jackson)
A strange light appeared in the sky over northern Norway. No one seems to know what caused it to appear. Could it be a beckon from Santa or the Russians playing with a new toy?
"The mystery began when a blue light seemed to soar up from behind a mountain in the north of the country. It stopped mid-air, then began to move in circles. Within seconds a giant spiral had covered the entire sky. Then a green-blue beam of light shot out from its centre - lasting for ten to 12 minutes before disappearing completely.
Onlookers describing it as 'like a big fireball that went around, with a great light around it' and 'a shooting star that spun around and around'."
Actually, its a dark molecular cloud also known as dark absorption nebulae. "What's that Joe?" It huge mass of dust and molecular gas which when mixed (not stirred) creates a combination that zaps out all the visible light. Hence, you can't see stars hiding in the background. Our friend above is called Barnard 68 and it is located in the Ophiuchus constellation.