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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🇫🇷 // Plus les jours avancent, plus la température descend ! 🥶 Il faut donc s'équiper en conséquence ! 😉 🇳🇿 🇺🇸 // As the days go by, the temperature drops! ❄️ So Conrad needs to equip himself accordingly! 🧤

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Moonstone is a 62ft Sunreef catamaran, meticulously crafted in Europe for ultimate luxury and performance. After exploring the Mediterranean and crossing the Atlantic to the Caribbean, she now resides in the beautiful Papagayo Peninsula in Guanacaste, Costa Rica, offering a one-of-a-kind sailing experience. With her 30ft beam and a towering 80ft carbon fiber mast, Moonstone stands out as a superior vessel in both comfort and performance. Renovated in 2016, her charter-friendly layout provides the perfect balance of spaciousness and modern elegance. Learn more: ►moonstone.cr Follow us on Instagram: ►@moonstone_costarica Book your tour now: ►sailmoonstone.cr@gmail.com #catamaransailing #yachtlife #costarica #catamarans #costaricatours

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Introduktionskurs i segling, dag 2, läs mer på www.sailstar.se

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