1. Physics as Freedom

    02:25

    from Realizing Empathy / Added

    426 Plays / / 0 Comments

    Visit our project at http://realizingempathy.com We live in a world full of "things". Much of what we do everyday involves reenacting verbs on things. For example, trimming a piece of paper may be described as reenacting the verb "cut" on the piece of paper. Just as we reenact verbs on things, we often times reenact verbs on files. But for the average person, reenacting verbs on files tends to involve many more steps, and takes a much longer time to complete. Yes it's true that you get faster as you get better with the tools, but that's not all. Software tools are usually much more expensive than their physical counterparts. To be fair, software tools typically do a lot more than one thing to justify their cost. But the real difference is not in the speed or the cost. It is in having the freedom of choice. In the physical world, if we don't have a knife to cut with, we can choose to use our own bare hands. If our hands are tied up, we can even use our teeth. Nobody can deny us of this freedom of choice that physics affords us. Why should the digital world be any different? http://dl.acm.org/citation.cfm?id=1869553

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    • Physics and Performance

      43:46

      from UOregon Science Outreach / Added

      16 Plays / / 0 Comments

      A workshop held at the 2008 Summer American Association of Physics Teacher meeting in Edmonton Canada, promoted the idea of incorporating the demonstration of physics principles into various styles of theater performance. The output of the workshop was performed on stage at the meeting to display the idea to other meeting participants. Co-organizer: Stanley Micklavzina, University of Oregon Physics.

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      • Making Games With FlashPunk: Episode 12 - Moving, Jumping and Physics for Platformers!

        21:14

        from Zachary Lewis / Added

        4,234 Plays / / 0 Comments

        In this episode, we'll be starting from scratch to create a brand new platformer, using only our brain—as well as FlashPunk. Hang on and listen to me mess up all my words all the time, because it's super late! Links Source Code: https://github.com/zachwlewis/FlashPunk-Platform-Tutorial/zipball/episode12 The Game Studio: http://www.thegamestudio.net FlashPunk: http://www.flashpunk.net

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        • Strapex Intro

          00:20

          from Deny Fousek / Added

          28 Plays / / 0 Comments

          Client: Strapex Agency: Maybaum

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          • Physx y UDK

            03:27

            from juan gabriel / Added

            36 Plays / / 0 Comments

            En el siguiente vídeo se muestra una escena similar a la vista en Ogre3D y bullet pero ahora con el engine UDK el cual utiliza el motor de físicas physx de Nvidia.

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            • String Theory and Geometery - Shiraz Minwalla, Tata Institute of Fundamental Research

              30:13

              from Kavli Frontiers of Science / Added

              230 Plays / / 0 Comments

              Fluid Dynamics from gravity Shiraz Minwalla, Tata Institute of Fundamental Research In this talk I study equations of gravity (with a so called negative cosmological constant) in a long distance limit. I demonstrate that these equations, reduce to the equations of fluid dynamics in one dimension lower. This observation partially unifies two of the best studied classical equations of classical physics: Einstein's equations and the Navier Stokes equations: and may have several interesting consequences. At the practical level our work permits the computation of transport coefficients of strongly coupled fluids. More structurally it establishes the presence of fascinating fluid phenomena like turbulence in systems of pure gravity. At a fundamental level our work suggests that spacetime is a thermodynamically emergent notion in some situations. The work reported on in this talk is set within the paradigm of the AdS/CFT correspondence of string theory.

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              • String Theory And Geometry - Rajesh Gopakumar, Harish Chandra Research Institute

                13:39

                from Kavli Frontiers of Science / Added

                291 Plays / / 0 Comments

                String Theory And Spacetime Rajesh Gopakumar, Harish Chandra Research Institute Space and time together constitute one of the most basic elements of physical reality. To most of us they are the arena on which events occurs. However, since Einstein, physicists have learnt that spacetime (the four dimensional entity which naturally combines space and time) is no passive stage on which events unfold. It too is is an active participant in the drama, so to say. The geometry of spacetime depends on the matter and energy in it. It is in this geometry that the force of gravitation is manifested. At the same time, in the 20th century, it was also understood that physical reality is quantum mechanical in nature. Classically measured quantities like positions and velocities are merely averages of intrinsically fluctuating quantum "observables". How do we extend this understanding to the nature of spacetime itself? It is very hard to understand how the basic notions of space and time can only be statistical averages. Which is why most attempts to consistently describe a quantum theory of spacetime have failed. String theory, building upon hints provided from the physics of black holes, seems to be suggesting a radical new solution to this question. We are far from understanding the answer in general. But in a large family of spacetimes, there is a very definite proposal which seems to be entirely consistent and at the same time surprising. It involves understanding spacetime "holographically". Giving a flavour of this proposal will be one of the main themes of this session.

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                • Dr. Hugh Ross

                  55:01

                  from Lake Samm / Added

                  433 Plays / / 0 Comments

                  Dr. Hugh Ross from Reasons to Believe. www.reasons.org

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                  • Dr. Hugh Ross Q&A

                    01:14:00

                    from Lake Samm / Added

                    209 Plays / / 0 Comments

                    The second half of Dr. Hugh Ross's seminar on 10/26/2011. Reasons to Believe www.reasons.org

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                    • Vector Operations

                      15:12

                      from Christian Gehman / Added

                      574 Plays / / 0 Comments

                      Very very friendly, very friendly, friendly, and unfriendly vectors--what are they? And how do I add or subtract them? How do I find the direction of a 2-D vector using trig

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