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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Set sail with us in the virtual world of MarineVerse! This ( and every ) Sunday, embark on a unique sailing journey from the comfort of your home. Registration: https://sailing-blog.nauticed.org/vr-event-registration/ Get a glimpse of the serene seascape and feel the thrill of the helm in our latest 'Sail with Instructor' event. 🌊⛵️ Whether you're a seasoned sailor or new to the sport, this experience is designed to cater to all skill levels. Don't miss the boat—sign up now and make a splash in the exciting realm of VR sailing!

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duckabush river flood pictures

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Getting Wild and crazy in boats!

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Harness the power of the wind! 🌬️ Did you know wind speed varies with height on ships, affecting sail trim and performance? Mastering how to adjust sails for these changes can make all the difference on the water. Set your course for smoother sailing and optimal speed! ⛵️✨ #catamaranbook #NEELtrimarans #Nautitechcatamarans #McConaghyBoats #multihulls #shorts

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3-Second Knots - The Sheet Bend - First Person The Resourceful Sailor www.sailingwithjosh.com

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