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Old 23rd September 2015, 08:25 PM
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RobF RobF is offline
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Default Schlieren photography might have got cheaper...

Although the breakthrough it's unlikely to work at the size we want so well, and here in the UK we do need that old sun thing which isn't that common, the article does demonstrate the pressure waves you get off objects that aren't travelling at supersonic, these which upset the view a chrono sensor has of an airgun pellet... which is why things on muzzles can show an apparent power change of an airgun.
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