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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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This year Southern Wind was the main sponsor of the Hobie 16 Provincial Championships 2025 in Langebaan, South Africa - 29 entries, 12 more than last year. 3 Entries were Southern Wind employees, testing the waters on slightly smaller boats than the ones we build!

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Some time the fastest way to improve is by learning from your mistakes. The team on GTR Racing were hugging the shore to shelter from the on rushing tide, they pushed it a little to much and found the bottom which acted as an instant hand break. Luckily only the the skippers pride was hurt as they bounced off the bottom releasing the hand break allowing them to push on for a racing win. The team BupB creates sailing content to help you both on and off the water, from maintenance to knot and splicing videos all the way through to sailing tactics and race reviews, we have all angles covered to help you improve your sailing skills. From novices to experts there will always be something to help you take your sailing next level. #shorts give you at quick taste of the full content our our site, if you like what you see head over to the Bottom up Boats channel page to catch the full versions of these #shorts .

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The Path to Paris has begun, and the best-doublehanded teams on earth race for the 2021 Asian Championship. Racing for the first time in Asia, the fleet is hosted by Oman Sail in Mussanah, an idylic setting on the Indian Ocean. Many teams are competing for the worlds title and to set a marker as the top dogs as team have a shortened window until the next Olympic games. https://49er.org/event/2021-world-championship/

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