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Todd Suomela

The Bohr paradox - physicsworld.com - 0 views

  • Why? The best explanation I have heard is advanced by the physicist John H Marburger, who is currently science advisor to US President George Bush. By 1930, Marburger points out, physicists had found a perfectly adequate way of representing classical concepts within the quantum framework using Hilbert (infinite-dimensional) space. Quantum systems, he says, “live” in Hilbert space, and the concepts of position and momentum, for instance, are associated with different sets of coordinate axes that do not line up with each other, thereby resulting in the situation captured in ordinary-language terms by complementarity.“It’s a clear, logical and consistent way of framing the complementarity issue,” Marburger explained to me. “It clarifies how quantum phenomena are represented in alternative classical ‘pictures’, and it fits in beautifully with the rest of physics. The clarity of this scheme removes much of the mysticism surrounding complementarity. What happened was like a gestalt-switch, from a struggle to view microscopic nature from a classical point of view to an acceptance of the Hilbert-space picture, from which classical concepts emerged naturally. Bohr brokered that transition.”
  • In his book Niels Bohr’s Times, the physicist Abraham Pais captures a paradox in his subject’s legacy by quoting three conflicting assessments. Pais cites Max Born, of the first generation of quantum physics, and Werner Heisenberg, of the second, as saying that Bohr had a greater influence on physics and physicists than any other scientist. Yet Pais also reports a distinguished younger colleague asking with puzzlement and scepticism “What did Bohr really do?”.
Todd Suomela

PLoS ONE: A Demonstration of the Transition from Ready-to-Hand to Unready-to-Hand - 1 views

  • In Chapter III of Being and Time, Heidegger distinguishes three modes of experiencing the world. Most human activity, Heidegger argued, is absorbed, skillful engagement with entities in the world. When we are coping skillfully with the world, we experience entities around us as ready-to-hand.
  • Heidegger argues that skilled coping, when we engage with entities as ready-to-hand, is our primary way of engaging with the world. Sometimes, though, our skillful coping is temporarily disturbed. When this happens, we encounter entities as unready-to-hand. When we go from smoothly hammering to having difficulty, our experience of the previously ready-to-hand entities changes: we experience the hammer, nails and board as failing to serve their function appropriately.
  • Heidegger's third way of experiencing the world is as present-at-hand. The hammer is encountered as present-at-hand when we stop hammering and consider the hammer's shape or color or weight; when considered this way the hammer is no longer a useful tool but merely an object with various properties. Heidegger argued that readiness-to-hand is primary in two ways. First, the majority of our experience of the world is engaging with entities ready-to-hand. Second, readiness-to-hand is, from a phenomenological standpoint, ontologically primary while the other modes are derivative of it.
Todd Suomela

On the Pew Science Survey, Beware the Fall from Grace Narrative : Framing Science - 0 views

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    This traditional fall from grace narrative about science argues for the need to return to a (fictional) point in the past where science was better understood and appreciated by the public... Yet you would be hard pressed to find this type of rhetoric in the peer-reviewed literature examining public opinion about science, the role of scientific expertise in policymaking, or the relationship between science and other social institutions.
Pump Wat

Pool Water Pumps for Clean and Safe Swimming Pools - 2 views

I have a swimming pool at home and I want it to be always clean and safe to use. That is why I bought water pumps from Pump Solutions Australasia, the leading wholesaler of pumps for industrial a...

pumps

started by Pump Wat on 13 Jul 11 no follow-up yet
Todd Suomela

Norms, "Ideology", and the Move against "Functionalist" Sociology « Ether Wav... - 1 views

  • However, at the same time, another critique questioned the basic validity of that framework. This critique shared the SSK critique’s interest in describing actual scientific work, but, like Mertonian sociology, it focused on scientists’ and others’ sense of the essence of scientific culture without directly addressing knowledge-production processes. This critique held that, because “functionalist” ideal-type systems of scientific behavior could not actually be found in their pure form, such systems did not meaningfully exist. Legitimate sociology had to be obtained inductively from the empirical record, as studied by historians and ethnologists.
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    Very interesting summary of debates on SSK and Mertonian science studies during the mid-20c. Describes the move away from functional, ideal-type, descriptions a la Merton to more historically specific microhistories a la Daston.
Aman Khani

Geo Advertising Points you Towards Targeted Customers - 1 views

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    Geo-targeting has become a primary choice of advertisers that give them a way to reach out the right audience. You can reach to your potential customers from any particular location that also helps you achieve greater brand visibility.
Infogreen Global

Low cost alternative for generating hydrogen gas from water - 1 views

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    A technique for creating a new molecule that structurally and chemically replicates the active part of the widely used industrial catalyst molybdenite has been developed by researchers with the U.S.
thinkahol *

On "Consciousness: The Black Hole of Neuroscience" aka the "hard" problem | Thinkahol's... - 1 views

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    What had been lacking until relatively recently was an overarching framework or theory through which to grasp the nature of consciousness. The lack of a general theory of consciousness, of how it comes to be that there is something that it is like to be, was really the last rational bastion of opposition to the scientific assertion that consciousness emerges from the brain.
thinkahol *

Erasing signs of aging in human cells now a reality - 1 views

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    ScienceDaily (Nov. 3, 2011) - Scientists have recently succeeded in rejuvenating cells from elderly donors (aged over 100). These old cells were reprogrammed in vitro to induced pluripotent stem cells (iPSC) and to rejuvenated and human embryonic stem cells (hESC): cells of all types can again be differentiated after this genuine "rejuvenation" therapy. The results represent significant progress for research into iPSC cells and a further step forwards for regenerative medicine.
Todd Suomela

Thatcher, Scientist - 0 views

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    This paper has two halves. First, I piece together what we know about Margaret Thatcher's training and employment as a scientist. She took science subjects at school; she studied chemistry at Oxford, arriving during World War II and coming under the influence (and comment) of two excellent women scientists, Janet Vaughan and Dorothy Hodgkin. She did a fourth-year dissertation on X-ray crystallography of gramicidin just after the war. She then gathered four years' experience as a working industrial chemist, at British Xylonite Plastics and at Lyons. Second, my argument is that, having lived the life of a working research scientist, she had a quite different view of science from that of any other minister responsible for science. This is crucial in understanding her reaction to the proposals-associated with the Rothschild reforms of the early 1970s-to reinterpret aspects of science policy in market terms. Although she was strongly pressured by bodies such as the Royal Society to reaffirm the established place of science as a different kind of entity-one, at least at core, that was unsuitable to marketization-Thatcher took a different line.
Infogreen Global

Hybrid solar cells to boost the electrical current - 0 views

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    Typically, a solar cell generates a single electron for each photon captured. However, by adding pentacene, an organic semiconductor, the solar cells can generate two electrons for every photon from the blue light spectrum. This could enable the cells to capture 44% of the incoming solar energy.
sdiwc conferences

TAEECE2013 International Conference in Turkey | SDIWC Conferences - 0 views

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    You are invited to participate in The International Conference on Technological Advances in Electrical, Electronics and Computer Engineering (TAEECE2013) that will be held in Konya, Turkey on May 9-11, 2013. The event will be held over three days, with presentations delivered by researchers from the international community, including presentations from keynote speakers and state-of-the-art lectures.
thinkahol *

Your Brain on Computers - Attached to Technology and Paying a Price - NYTimes.com - 0 views

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    Scientists say our ability to focus is being undermined by bursts of information from e-mail and other interruptions.
thinkahol *

YouTube - Think faster focus better and remember moreRewiring our brain to stay younger... - 0 views

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    October 24, 2008 - Google Tech Talks June 16, 2008 ABSTRACT Explore the brain's amazing ability to change throughout a person's life. This phenomenon-called neuroplasticty-is the science behind brain fitness, and it has been called one of the most extraordinary scientific discoveries of the 20th century. PBS had recently aired this special, The Brain Fitness Program, which explains the brain's complexities in a way that both scientists and people with no scientific background can appreciate. This is opportunity to learn more about how our minds work-and to find out more about the latest in cutting-edge brain research, from the founder of Posit Science and creator of the Brain Fitness Program software, Dr. Michael Merzenich. Speaker: Dr. Michael Merzenich, Ph.D. Michael M. Merzenich, PhD: Chief Scientific Officer Dr. Merzenich leads the company's scientific team. For more than three decades, Dr. Merzenich has been a leading pioneer in brain plasticity research. He is the Francis A. Sooy Professor at the Keck Center for Integrative Neurosciences at UCSF. Dr. Merzenich is a member of the National Academy of Sciences. He is the recipient of numerous awards and prizes, including the Ipsen Prize, Zulch Prize of the Max Planck Institute, Thomas Alva Edison Patent Award and Purkinje Medal. Dr. Merzenich has published more than 200 articles, including many in leading peer-reviewed journals, such as Science and Nature. His work is also often covered in the popular press, including the New York Times, the Wall Street Journal, Time and Newsweek. He has appeared on Sixty Minutes II, CBS Evening News and Good Morning America. In the late 1980s, Dr. Merzenich was on the team that invented the cochlear implant, now distributed by market leader Advanced Bionics. In 1996, Dr. Merzenich was the founding CEO of Scientific Learning Corporation (Nasdaq: SCIL), which markets and distributes software that applies principles of brain plasticity to assist children with language
thinkahol *

Why Facebook friends are worth keeping - tech - 15 July 2010 - New Scientist - 0 views

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    Tired of status updates from people you hardly know? Pay attention and you might find those weak ties more useful than you think
thinkahol *

Pressure-cooking algae into a better biofuel - 0 views

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    ScienceDaily (Apr. 26, 2010) — Heating and squishing microalgae in a pressure-cooker can fast-forward the crude-oil-making process from millennia to minutes.
thinkahol *

YouTube - Your Mind is Controlled - 0 views

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    Through education, media, and big business, your mind is being controlled. Your mind is distracted with illusions to keep you away from the truth. Reason why America is dumbed down.
thinkahol *

Study predicts nanoscience will greatly increase efficiency of next-generation solar cells - 0 views

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    "As the fastest growing energy technology in the world, solar energy continues to account for more and more of the world's energy supply. Currently, most commercial photovoltaic power comes from bulk semiconductor materials. But in the past few years, scientists have been investigating how semiconductor nanostructures can increase the efficiency of solar cells and the newer field of solar fuels. "
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