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#2041 |
Ain't no relax!
Join Date: Sep 2005
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Wow!!
NASA Just Emailed A Wrench To The International Space Station ![]() For the first time ever, hardware designed on the ground has been emailed to space to meet the needs of an astronaut. From a computer in California, Mike Chen of Made In Space and colleagues just 3D-printed a ratcheting socket wrench on the International Space Station. “We had overheard ISS Commander Barry Wilmore (who goes by “Butch”) mention over the radio that he needed one,” Chen writes in Medium this week. So they designed one and sent it up. “The socket wrench we just manufactured is the first object we designed on the ground and sent digitally to space, on the fly,” he adds. It’s a lot faster to send data wirelessly on demand than to wait for a physical object to arrive via rockets, which can take months or even years. The team started by designing the tool on a computer, then converting it into a 3D-printer-ready format. That’s then sent to NASA, which transmits the wrench to the space station. Once the code is received by the 3D printer, the wrench is manufactured: Plastic filament is heated and extruded layer by layer. The ISS tweeted this photo earlier this week, and you can see more pictures of the very cool wrench-printing process here. Located on the campus of NASA’s Ames Research Center, Made In Space built the first 3D printer for microgravity, and it was launched to the ISS in September. Within a month, the astronauts 3D-printed their first object: a replacement faceplate for the printer’s casing (pictured below). ![]() “We chose this part to print first because, after all, if we are going to have 3-D printers make spare and replacement parts for critical items in space, we have to be able to make spare parts for the printers,” NASA’s Niki Werkheiser said in a news release back in November. “If a printer is critical for explorers, it must be capable of replicating its own parts, so that it can keep working during longer journeys to places like Mars or an asteroid. Ultimately, one day, a printer may even be able to print another printer.” Since then, another 20 objects have also printed -- though these were designed before the printer left Earth and the files were delivered on a cargo supply flight. These first prints will be brought back down in 2015 for examination. Researchers will be comparing them to identical objects manufactured on the ground to study the effects of microgravity on the 3D-printing process.
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#2042 |
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Happy 50th
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#2043 |
Ain't no relax!
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This curve is called an "analemma" and it occurs because of our elliptical and tilted orbit around the sun.
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#2044 |
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I think I saw her on tubegalore.
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#2045 |
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Sorry everyone. But Earth is kill today. It's been scientifically proven....
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#2046 |
(Sir/Yes Sir/Aye Aye Sir)
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#2047 | |
www.nfl-forecast.com
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Quote:
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#2048 |
Ain't no relax!
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Remember.......
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#2049 |
Has a particular set of skills
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#2050 |
Ain't no relax!
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#2051 |
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#2052 |
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Quantum Physics Just Got A Tiny Bit Easier To Understand, As Two Oddities Merge Into One
The scientific article (Equivalence of wave–particle duality to entropic uncertainty) http://www.nature.com/ncomms/2014/14...comms6814.html No one is about to claim that quantum physics is now easy to understand, but maybe it's not quite as devilishly complicated as we thought. New research suggests that two of the quantum world's most mysterious features--the uncertainty principle and wave-particle duality--are simply two sides of a single coin. "The connection between uncertainty and wave-particle duality comes out very naturally when you consider them as questions about what information you can gain about a system," Dr. Stephanie Wehner, an associate professor at Delft University of Technology in the Netherlands and one of the scientists behind the research, said in a written statement. "Our result highlights the power of thinking about physics from the perspective of information." Wave-particle duality is the idea that elementary particles can exhibit wave-like behavior--for example, as seen in the classic double-slit experiment. The uncertainty principle holds that it's impossible to know both the position and momentum of a particle at the same time. The proposed unification of the two features may bring new advances in cryptography, Dr. Patrick Coles, a postdoctoral fellow at the University of Waterloo's Institute for Quantum Computing in Canada and one of Wehner's collaborators, told The Huffington Post in an email. For example, he said, it could point the way to provide "perfectly secure" online credit card transactions. In addition, the advance promises to make it easier for physics students to make sense of a field that is notoriously difficult to understand. Instead of having to learn two separate phenomena, Coles said, "they can just learn the uncertainty principle and then deduce the competition between wave and particle behavior as a consequence of the uncertainty principle." But perhaps most significant is that the unification may change the way scientists see the physical world--as happened when 19th Century scientists discovered that electricity and magnetism aren't distinct forces but just different manifestations of a single force we now call electromagnetism. "Although our work is not at that level of impact, our work does affect how physicists view the structure of quantum theory," Coles said in the email. "Most physicists believe that quantum theory applies to every object around us, including ourselves. Even though it is weird to think of the particles inside us sometimes behaving like waves, that is the strange truth." Coles said the key to the new research was to use mathematics to translate the language of wave and particle behavior into the language of uncertainty. He offered the following analogy: "When we came across the literature on wave-particle duality, it was like trying to read hieroglyphics. The big breakthrough that we made was to discover a Rosetta Stone, or construct a Rosetta Stone, that allowed us to translate these hieroglyphics into our native tongue... it was especially fun because no one had ever translated these hieroglyphics before."What do other physicists make of the research? Dr. Robert W. Spekkens, a physicist on the faculty at the Perimeter Institute for Theoretical Physics in Waterloo, Canada, called it "a very nice result" and "significant," adding that "the more we understand the connections between different quantum phenomena, the better our chances of making sense of the foundations of quantum theory."
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#2053 |
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#2054 |
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I just love these Hubble telescope pics
http://www.iflscience.com/space/hubb...llars-creation Almost 20 years ago, the Hubble Space Telescope took a breathtaking image that would soon become one of the most famous pictures in astronomy. That image was of the iconic Pillars of Creation; towering, ghost-like clouds of gas and dust, bathed in the blazing light from a cluster of newborn stars within the Eagle Nebula, or Messier 16. Now, in honor of the instrument’s 25th year in orbit, astronomers have revisited this sublime celestial landscape and captured its evocative features in an unimaginable level of detail. ![]()
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#2055 |
Needs more middle fingers
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