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Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Edited from to 1/4th normal speed. 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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Peanut Regatta 42 Galveston Bay 10/6/2024
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During clients’ trials we were able to surpass 20 knots of speed ⛵️🚀 in 15-17 knots wind speed ✌️ #performance #catamaran #multihull #multicoque #yachting #sailing #speed #safety #independence #20knots Follow us: Website https://www.independentcatamaran.com Instagram https://www.instagram.com/independentcatamaran/ Facebook https://www.facebook.com/independentcatamaran
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Pour naviguer en toute sécurité et profiter des mouillages il est indispensable et sécuritaire d'avoir une ancre. Comment ça se passe ,pourquoi dit on mouiller l'ancre et que signifie se mettre dans un mouillage.
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