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Crystal on deck affordable prices

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Okay, I know there’s no air in space, but I still think it’s pretty fun that Dr. Mike Hargather put a model of the Millennium Falcon in his wind tunnel. We can see the air flow because he used a technique called Schlieren Visualization. That same technique can be used to see all kinds of things – heat rising from hair straightener, carbonation coming off a soda, even sound waves. I explain the technique in the video “What Does Sound Look Like?“