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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!!

donotpushhere

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Aphrodite 101 https://www.scanboat.com/en/17348472

scanboat24

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Un grand merci à nos amis et notre skipper Rémi pour ce nettoyage sur l'île de Peristera dans les Sporades. Nous les félicitons et les remercions pour ce geste humain et leur profond respect de l’environnement. Un exemple à suivre ... Grèce Août 2020 Catamaran - Lagoon 42 de 2020 Toutes les infos sur: https://www.voilivoilou.fr/actus/nettoyage-de-plage-impromptu-merci-a-vous/

voilivoilou.vosvacances

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loftsails

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In sailing, things don’t always go to plan — sometimes even the numbers on the invoice take you by surprise. That’s not how I do things. I believe in being upfront, simple, and clear. If you sail with me, you’ll know exactly what’s included — no weird extras, no hidden fees, no “oops” at the end. Because when you're out at sea, the last thing you should be worrying about is logistics. You're here to feel free.

elmarsailing

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📖 Read the caption – you don't want to miss this! 📖 🌍 Explore Norway's Unbelievable Natural Wonders! 🇳🇴 From the iconic Trolltunga cliff, the serene beauty of Geirangerfjord, to the untouched islands of Lofoten – these places will take your breath away. Each destination holds a story that's worth discovering. 📜 What to know: Trolltunga: A stunning rock ledge hanging 700 meters above a lake. 🌄 The hike is challenging, but the reward is an unforgettable view. Geirangerfjord: A UNESCO World Heritage site, famous for its breathtaking waterfalls and towering cliffs. 🚢 Lofoten: Known for their dramatic peaks, deep blue fjords, and picturesque fishing villages. 🏞️ #Norway #Trolltunga #Geirangerfjord #Lofoten #Adventure #Travel #Explore

realworldtravel-e5z

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