Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). 1/8th speed (15fps) and improved video performance because somehow Youtube cropped the last frames of the other videos (?) I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!

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Why you shouldn't miss Boot Tulln? Watch the video and find out! Join us at Boot Tulln from March 6-9. Registrations are available on the website, and our team will be there to introduce you to all the amazing models, including the Dracan 42! . . . #MasterYachting #BootTulln #TullnBoatShow #WaterSports #Dracan42 #DracanMarine #MasterYachtingGroup

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Discover the right way to clear a mask underwater! Many divers make the mistake of exhaling through their mouths, but there's a better way that keeps vision crystal clear. Breathing through the nose prevents mask fog and ensures a safe and enjoyable dive. Why do divers make this common error? #scubadiving #maskclearing #divingtips #underwater #learntodive

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Axel får storstryk av tigern!

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