Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Unedited at 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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Nous ne sommes pas des gourdasses mais un peu quand même ... au printemps, Florent Alès nous a lancé un défi : "et si vous faisiez un matchplay plutôt ?" ... et zou, nous avions joué en matchplay ce qui était vraiment amusant ! Trois mois plus tard : "heu c'est quoi un matchplay déjà ?" Gourdasses un jour, gourdasses toujours.

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Fakarava Atoll, Tuamotu 🌊 Flat Water & Insane Underwater World! | Pacific Paradise #shorts https://youtube.com/shorts/LFe5BfUrLdU Fakarava Atoll, Tuamotu – one of the most stunning gems of the Pacific Islands! Dive into the flat, crystal-clear water and experience the insane underwater world full of vibrant corals and marine life. 🌊🐠 This is what underwater paradise in the Pacific Ocean looks like. Fakarava is part of the Tuamotu archipelago in French Polynesia and is a dream location for divers and ocean lovers. Fakarava Atoll Tuamotu, Fakarava underwater world, Fakarava Pacific Islands – real beauty, no filters. Subscribe for more breathtaking views from the South Pacific! 🎵 Music used: Old-School Orbit – https://www.youtube.com/watch?v=9aAenZPX0ec 🌴 Don’t miss this short escape to the Pacific Islands paradise. #shorts #pacific #pacificislands #fakarava #tuamotu #underwaterworld #oceanlife #clearwater #tropicalparadise

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Peru abordo del OD27 "Chino"

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Get a 30-second look at LUNAR SEA, a late-model 2023 Dufour 390 set up for easy shorthanded sailing and relaxed coastal cruising. Dual electric primaries, electric halyard winch, upgraded Volvo 50 hp, bow & stern thrusters (proportional), full Raymarine suite (autopilot, AIS, radar), Quantum tri-radial main & 108% jib (2024), and a never-used North Sails Helix furling gennaker. Flexiteek decks, Carbonautica wheels, canvas package with LED lighting, cockpit grill & sink, davits, Mantus anchor with 200’ chain, reversible A/C, and a bright two-cabin layout make this a turnkey, nearly-new cruiser. Ready to learn more or schedule a private showing? 📞 +1 (410) 279-3027 📧 erik@davidwaltersyachts.com 🌐 davidwaltersyachts.com (Ask for Erik Haaland) #Dufour390 #DufourYachts #Sailing #Sailboat #CruisingSailboat #CoastalCruiser #ShorthandedSailing #YachtShorts #BoatShorts #DavidWaltersYachts

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