1. Kari Alison Hodge's Dance Your PhD - The Search for Gravitational Waves in LIGO Data from the Coalescence of Two Black Holes


    from Kari Alison Hodge / Added

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    Hi! I am a graduate student at Caltech and this video is my entry in the 2013 "Dance Your PhD" contest. An introduction to my PhD research is below, as is some background regarding the vocal tracks in the video. The coalescence of a pair of black holes produces ripples in spacetime known as gravitational waves. The coalescence is marked by three phases: 1) the "inspiral", when the two black holes are orbiting one another and the distance between them gets smaller and smaller; 2) the "merger", when the two black holes join to become one; 3) and the "ringdown", when the final black hole releases its excess energy, much like what happens when you ring a bell. The ripples in spacetime, which contain information from these three signature phases of coalescence, travel outward from the black holes at the speed of light. LIGO (The Laser Interferometer Gravitational-Wave Observatory) is designed to detect these gravitational waves, which stretch and squeeze spacetime as they pass by the detectors' sites in Louisiana and Washington state, causing the arms of a detector to alternate between getting shorter and longer. Lasers measure the amount by which the length of the arms are changing, and we can figure out what caused the ripples in spacetime by looking at the laser light that escapes. However, other things can happen inside the detector and in its environment that can trick scientists into thinking LIGO data contains a signal from two black holes. Events as different as an airplane going by or a glitch in any of the electronic control systems can mimic a true astrophysical signal. Comparing what is seen in the detector's gravitational-wave data to the theoretical waveform from a pair of coalescing black holes is not sufficient in order to distinguish an astrophysical signal from a glitch. We must also use the information from various sensors, in and around the detector, to confidently identify the signal. Combining all this information allows us to mistake fewer glitches for astrophysical events, which effectively increases the volume of space we can "hear". The coalescence of two black holes is actually very well-suited to a musical interpretation - the frequency of the produced gravitational waves is in the audio band. As the inspiral progresses and the black holes get closer together, the signal sweeps upward in both frequency and volume (this is known as a "chirp"). The attentive listener can hear the actual chirp (created by a computer simulation, as no gravitational waves have yet been detected) from the inspiral of two black holes during a couple key moments of my video. The vocal track over the black hole dance and the corresponding data also follows this progression of low to high, during the inspiral phase. During the ringdown, the vocal track is composed of a superposition of several frequencies, which is another direct analogy to what is physically happening. Note that most physical disturbances produce a ringdown effect in the disturbed object (imagine hitting a bell with a hammer), making them difficult to distinguish from a signal from the coalescence of two black holes. The dance during the closing credits (led by my thesis advisor) is the official LIGO dance - as the gravitational wave passes by, one arm of the detector/dancer gets shorter and the other arm gets longer in an alternating manner! Visit www.ligo.org for more! And even more musical LIGO fun here: http://www.youtube.com/watch?v=kapaztyPFVI&feature=youtu.be

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    • Tennessee Dove Shoot - Opening Day


      from Our Southern Roots / Added

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      Opening day dove shoot in Middle Tennessee!

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      • 3doodlin


        from savraj singh / Added

        6 Plays / / 0 Comments

        Wattvision 2 Analog Sensor Setup. Note the KH value on your meter needs to be entered in at your house > settings page as well.

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        • Mass. Eye and Ear on the Scene with Lydia


          from Mass. Eye and Ear / Added

          12 Plays / / 0 Comments

          Mass. Eye and Ear cub reporter Lydia goes behind the scenes of the main campus; checking out the tastes, sights, sounds, fun and research that goes on every day!

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          • Alcon Labs - Digital Signage


            from CRM Studios / Added

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            Alcon Laboratories, the eye care division of Novartis, tasked Dallas Production Company CRM Studios to create a series of spectacular, custom entry graphics and digital signage visuals for their booth at the European Society of Cataract & Refractive Surgeons (ESCRS '13) trade show, held in Amsterdam this October.

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            • New directions in science and business at Health Diagnostic Laboratory, Inc. (HDL, Inc.), and opportunities for collaboration


              from Virginia Bio / Added

              Details: Health Diagnostic Laboratory, Inc. (“HDL, Inc.”) in under five years has grown from a few founders to more than 700 employees and two six-story laboratory facilities in the Virginia BioTechnology Research Park in Richmond. HDL, Inc. provides the most comprehensive laboratory test menu of biomarkers and risk factors available, enabling patients and their doctors to practice proactive health and medicine. HDL, Inc. is reinventing the blood lab industry, and making major contributions to patient outcomes across the country and world, particularly in cardiovascular and related disease and diabetes. As HDL’s experience, capabilities and resources have grown, its passion for innovation and for making a difference in personal health management around the world is leading it to explore new and additional technologies and unmet needs, through in licensing, joint ventures and other collaborative models. In this panel, business and science leaders from HDL will describe recent collaborations, and identify directions, goals and needs of the company going forward with an emphasis on areas of potential collaboration. Speakers: Dr. Szilard Voros, Chief Clinical Strategy Officer- HDL, Inc.; Mark Herzog, SVP, Corporate and Governmental Affairs- HDL, Inc.; and Brad Brown, VP, Clinical Affairs- Global Genomics Group

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              • The Art of Goats


                from Max Pearson / Added

                136 Plays / / 0 Comments

                We're not young anymore. Our social life has dwindled to Facebook. We must drive over 800 miles to get married. But I wake up each morning with a smile because by da-YAM we've raised some excellent goats. Thanks for watching.

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                • 3D Holographic Display innovation - Ariel Pods


                  from ID Labs / Added

                  137 Plays / / 0 Comments

                  Hologram show launching Ariel new products PODS in a unique way using Hologram device ID N80 HD display.

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                  • Jana Labs


                    from Jackson Marketing / Added

                    12 Plays / / 0 Comments

                    Jana provides comprehensive testing and predictive modeling processes to help keep underground pipelines safe.

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                    • Making Things to Make Things: Teagueduino Turntable


                      from TEAGUE / Added

                      Seems everyone is “making things” these days. But making things to enable making things? That’s hardcore. And that’s how we like it. Case in point. Recently I lent a hand to a large model build. As part of the build, there were quite a few 3D printed parts that had to be painted. And not in the traditional sense, but by painstakingly dusting each part with three different kinds of paint to simulate a molded cardboard finish. That meant each part could only receive a partial coat of paint dusting, one at time…difficult to achieve on different parts, near impossible to match on one part side-to-side, top-to-bottom. Simple solution: A turntable that could constantly turn the parts while painting to ensure an even coating. I started searching the Lab for some kind of lazy-Suzan device… Better solution: Eureka moment! I grabbed a spare Teagueduino along with a few spare parts and quickly created a speed adjustable, motorized turntable. Auto vs. manual? Easy choice. In less than 10 minutes I laser cut, hot glued together and programmed a simple, motorized and speed adjustable turntable. Just like that. The right tool for the right job. This is one of those quick and dirty projects that illustrates that the right tool for the job makes all the difference in the result and the quality of the work. All in all I was super happy with the output of this impromptu Teagueduino-powered tool both in the quality of the objects it enabled me to make and the time it saved (which was substantial). We originally created Teagueduino as a tool to enable the quick prototyping of ideas; and I’m pleased at how this thing we made enabled me to make another tool that will help us makes better things in the future. A slightly revamped version of this original turntable (with a new base and table) now has a permanent home in our Labs’ paint booth, ready to help others ‘paint things’ and make things.

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