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Steven Engravalle

Physics Games - online physics-based games - 11 views

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    A great collection of free online physics games. You can even embed them directly into your website, wiki or blog.
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    Physics Games.net, as the name implies, is a website of games based on simple physics concepts. Physic Games offers dozens of games based on a physics concept or two. Each game can be played directly on the Physics Games website or embedded into your blog or website. The one downfall of the site is that before each game starts there is a short commercial. I checked out a few different games, and I did not see any advertising that would be unacceptable in a public school classroom. 
ZeroDivide .

Nova Fabric of the cosmos The illusion of time full video - YouTube - 48 views

  • The Evolution of Time and the Carnot Cycle at the Edge of the Universe
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    We are all time travelers... drifting through time at a steady pace, one moment at a time. In what direction are we moving through time? Or does time move through us? How many dimensions of time are there? Though slightly allegorical, three-dimensional time offers physics new parameters, accounting for conventional and exotic physical phenomena, while maintaining the conservation of energy and symmetry groups found in physical law.  I began playing with the idea that all of physics could be reduced to just interactions between spatial and temporal coordinates. I wondered if inertia and momentum might be composed strictly of temporal components. This would require extra time dimensions. Could inertia or momentum be used as indicators of multi-dimensional time? What about charge, spin, and other properties of matter? Answers to some of these questions appeared to reside in neutrino research, specifically neutrino flavor oscillation.  The universality between Thermodynamics and Temporal Mechanics can reduce the fundamental forces of nature into a single expression, a new equivalence principle, which can be used as the generator for the evolution of time. Once Quantum Mechanics is seen through the lens of three-dimensional time, the EPR paradox looses its mystique. The speed of light may be restricted to a set speed limit within each individual frame of reference, however, frames of reference can undergo periods-of-time at varying rates of the passage-of-time. If the positive side of absolute zero is a state of condensed matter, what is on the negative side of absolute zero? Uncondensed matter?  The anti-matter aspect of the Dirac equations may have been misinterpreted. The convention is to assume that "matter" is composed of "particles" distinctly different from "antimatter" composed of "antiparticles". The assumption of one time dimension locks in this interpretation of the Dirac Equations. However, the uniform production of particles and antipa
Martin Burrett

Physical activity in lessons improves students' attainment - 8 views

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    "Students who take part in physical exercises like star jumps or running on the spot during school lessons do better in tests than peers who stick to sedentary learning, according to a UCL-led study. The meta-analysis of 42 studies around the world, published in British Journal of Sports Medicine, aimed to assess the benefits of incorporating physical activity in academic lessons. This approach has been adopted by schools seeking to increase activity levels among students without reducing academic teaching time."
Deb White Groebner

Physics Animations - 128 views

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    Nice collection of physics animations.
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    Nice collection of physics animations.
Martin Burrett

Teens need vigorous physical activity and fitness to cut heart risk - 10 views

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    "Guidelines for teenagers should stress the importance of vigorous physical activity and fitness to cut the risk of heart disease, new research suggests. Current NHS guidelines say people aged 5 to 18 should do at least 60 minutes of moderate to vigorous physical activity each day to improve their current and future health. But in a study of adolescents aged 12 to 17, University of Exeter researchers found significant differences between the effects of moderate activity (such as brisk walking) and vigorous activity (activity that leaves people out of breath, such as team sports or running around a playground)."
Gareth Jones

Looking in the Wrong Places | Edge.org - 5 views

  • We should be very careful in thinking about whether we’re working on the right problems. If we don’t, that ties into the problem that we don’t have experimental evidence that could move us forward. We're trying to develop theories that we use to find out which are good experiments to make, and these are the experiments that we build.   We build particle detectors and try to find dark matter; we build larger colliders in the hope of producing new particles; we shoot satellites into orbit and try to look back into the early universe, and we do that because we hope there’s something new to find there. We think there is because we have some idea from the theories that we’ve been working on that this would be something good to probe. If we are working with the wrong theories, we are making the wrong extrapolations, we have the wrong expectations, we make the wrong experiments, and then we don’t get any new data. We have no guidance to develop these theories. So, it’s a chicken and egg problem. We have to break the cycle. I don’t have a miracle cure to these problems. These are hard problems. It’s not clear what a good theory is to develop. I’m not any wiser than all the other 20,000 people in the field.
  • I’m still asking myself the same question that I asked myself ten years ago: "What is going on in my community?" I work in the foundations of physics, and I see a lot of strange things happening there. When I look at the papers that are being published, many of them seem to be produced simply because papers have to be produced. They don’t move us forward in any significant way. I get the impression that people are working on them not so much because it’s what they’re interested in but because they have to produce outcomes in a short amount of time. They sit on short-term positions and have short-term contracts, and papers must be produced.
  • The field that I mostly work in is the foundations of physics, which is, roughly speaking, composed of cosmology, the foundations of quantum mechanics, high-energy particle physics, and quantum gravity. It’s a peculiar field because there hasn’t been new data for almost four decades, since we established the Standard Model of particle physics. There has been, of course, the Higgs particle that was discovered at the LHC in 2012, and there have been some additions to the Standard Model, but there has not been a great new paradigm change, as Kuhn would have put it. We’re still using the same techniques, and we’re still working with the same theories as we did in the 1970s.
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  • That makes this field of science rather peculiar and probably explains why there hasn’t been much progress. But it’s not like we don’t have any questions that need to be answered. There are a lot of questions that have been around for decades. For example, what is dark energy? What is dark matter? What are the masses of the Standard Model particles? And what’s up with the foundation of quantum mechanics? Is a theory that's fundamentally not deterministic, where we cannot predict outcomes, the last word that we have, or is there something more to it? Is there maybe another underlying structure to reality?
  • but we haven't reached the fundamental level. Maybe we will never reach it. Certainly, the theories that we have right now are not all there is. The question is, of course, if we don’t have any guidance by experiment, how do we make progress? And are we doing the right thing?
  • We’ve reached this point where we have to carefully rethink if the criteria that we’re using to select our theories are promising at all. If one looks at the history of this field in the foundations of physics, progress has usually been made by looking at questions that, at least in hindsight, were well posed, where there was an actual mathematical contradiction. For example, special relativity is incompatible with Newtonian gravity. If you try to resolve this incompatibility, you get general relativity.
  • There are various similar examples where such breakthroughs have happened because there was a real problem. There was an inconsistency and people had to resolve it. It had nothing to do with beauty. Maybe beauty was, in some cases, the personal motivation of the people to work on it. There’s certainly some truth to this, but I don’t think it’s good to turn this story around and say that if we only pay attention to this motivation that comes from ideals of beauty it will lead to progress.
  • If we are working with the wrong theories, we are making the wrong extrapolations, we have the wrong expectations, we make the wrong experiments, and then we don’t get any new data. We have no guidance to develop these theories. So, it’s a chicken and egg problem. We have to break the cycle. I don’t have a miracle cure to these problems. These are hard problems. It’s not clear what a good theory is to develop. I’m not any wiser than all the other 20,000 people in the field.
  • The way that research is funded in foundations of physics and in many other fields just puts a lot of things at a disadvantage that are not pursued anymore. Typically, everything that takes longer than three years to complete, no one will start it because they can’t afford it. They can literally not afford it.
  • Who makes the decisions about the funding? Superficially, people say that it's a funding agency, so it’s the university who get to hire people. But that puts the blame on the wrong party. In the end it’s the community itself who makes the decisions. What do the funding agencies do if they get a proposal? They send it to reviewers. And who are the reviewers? They're people from the same community. If you look at how hiring decisions are being made, there’s some committee and they are people from the same community. They have some advisory boards or something, which contains people from the same community.
  • Even if that wasn’t so, what the people in these committees would be doing is looking at easy measures for scientific success. Presently, the most popular of these measures are the number of publications and the number of citations. And maybe also whether the person has published in high-impact journals. So, these are the typical measures that are presently being used. But what do they measure? They primarily measure popularity. They indicate whether somebody’s research is well received by a lot of people in the same community. And that’s why once a research area grows beyond a certain critical mass, you have sufficiently many people who tell each other that what they’re doing is the good thing to do. They review each other’s papers and say that that’s great and it's what we should continue to do. It’s a problem in all communities that grow beyond a certain size.
  • I later came to the United States and then Canada, and that gave me the opportunity to learn a lot about quantum gravity. I also figured out that much of what goes on in quantum gravity is very detached from reality. It’s pretty much only mathematics. Yes, the mathematics is there, but I still don’t know if it’s the mathematics that describes reality.
  • That’s the very reason why we don’t normally think of gravity as a weak force. It’s the only force that is left over on long distances, and the reason for this is that it adds up. It gets stronger the more mass you pile up. More precisely, we should say that the reason we find it so hard to measure quantum gravitational effects is that we either have a particle that has very pronounced quantum properties, like, say, a single electron or something like that, but then it’s so light that we cannot measure the gravitational field. Or we have some object that is so heavy that we can measure the gravitational field, but then it doesn’t have quantum properties. Okay, so that’s the actual problem.
Martin Burrett

Children from disadvantaged backgrounds do less vigorous physical activity - 2 views

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    "Children from disadvantaged backgrounds and certain ethnic minority backgrounds, including from Pakistani and Bangladeshi backgrounds, have lower levels of vigorous physical activity, according to researchers at the University of Cambridge. The patterns mirror inequalities seen in levels of childhood obesity, suggesting a need for a greater focus on the promotion of vigorous physical activity, particularly for those children from more disadvantaged backgrounds."
Martin Burrett

Physical Mathematics by @iwilsonysj - 2 views

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    "I often sit on a Thursday evening about 2000hrs and watch the ukedchat hashtag. This week it was about physical education. Although this is not one of my strong subjects in teaching (or even in real life) I was interested in the first question which asked how physical education could be related to literacy and/or mathematics. Just like a GSCE multiple choice essay question I chose to answer how it could be related to mathematics. You can see the full tweet chat conversation here - but I thought I would expand my response in this week's waffle."
Trevor Cunningham

App Store - Vernier Video Physics - 40 views

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    Award winning Physics app
Deb White Groebner

The Physics Front - 81 views

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    Excellent physics resources for teachers - including elementary and middle school!
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    Excellent physics resources for teachers - including elementary and middle school!
Ann Lusch

Crayon Physics Deluxe - 103 views

  • a 2D physics puzzle / sandbox game, in which you get to experience what it would be like if your drawings would be magically transformed into real physical objects. Solve puzzles with your artistic vision and creative use of physics.
Ty Bradley

The Physics Classroom - 7 views

shared by Ty Bradley on 29 Oct 09 - Cached
    • Ty Bradley
       
      A great review site for assisting in your presentation.  Also has questions should you want to include them.
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    The Physics Classroom is an online interactive tutorial of basic physics concepts. The lessons use an easy-to-understand language to present common physics principles discussed in a first-year high school physics course.
Martin Burrett

Marvin and Milo guide to physics - 72 views

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    A superb set of comic strips explaining physics ideas and principals. Really interest and much more accessible for children. http://ictmagic.wikispaces.com/Science
Martin Burrett

Brains of children with a better physical fitness possess a greater volume of grey matter - 14 views

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    "Researchers from the University of Granada (UGR) have proven, for the first time in history, that physical fitness in children may affect their brain structure, which in turn may have an influence on their academic performance. More specifically, the researchers have confirmed that physical fitness in children (especially aerobic capacity and motor ability) is associated with a greater volume of grey matter in several cortical and subcortical brain regions."
Deborah Baillesderr

Algodoo - 71 views

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    "Algodoo gives you the opportunity to play with physics. Use your own hands and simple drawing tools to design, construct and explore the world of physics."
Martin Burrett

Minute Physics - 112 views

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    A superb YouTube channel with animations explaining physics ideas in simple terms. Great and introduction to a lesson or new topic. http://ictmagic.wikispaces.com/Science
Lucas Cittadino

Outstanding physics lessons from SKOOL on Smart Notebook - 78 views

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    Free physics lessons from SKOOL posted to smart exchange. Lessons can be adapted for all levels.
anonymous

Is Real Educational Reform Possible? If So, How? | Psychology Today - 3 views

  • Children come into the world intensely motivated to learn about the physical, social, and cultural world around them; but they need freedom in order to pursue that motive.  For their first four or five years of life we generally grant them that freedom. During those first few years, without any teaching, they learn a large portion of what any human being ever learns. They learn their entire native language, from scratch. They learn the basic practical principles of physics. They learn psychology to such a degree that they become experts in how to please, annoy, manipulate, and charm the other people in their environment.  They acquire a huge store of factual knowledge.  They learn how to operate the gadgets that they are allowed to operate, even those that seem extraordinarily complex to us adults.They do all this on their own initiative, with essentially no direction from adults.
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    "Children come into the world intensely motivated to learn about the physical, social, and cultural world around them; but they need freedom in order to pursue that motive."
Martin Burrett

Physics triathlon - 0 views

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    A set of three physics activities from the BBC. Use your knowledge of pressure, weight and time to answer the questions. http://ictmagic.wikispaces.com/Science
Martin Burrett

SetupSketchyPhysics3.2-Dec2.exe - sketchyphysics - SketchyPhysics 3.2 windows installer... - 41 views

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    A superb plugin for Google Sketchup that brings physics into your models. You will be amazed what you and your class will learn with this tool. http://ictmagic.wikispaces.com/ICT+&+Web+Tools
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