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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🇫🇷 Alan Roura se prépare à célébrer un réveillon de la Nouvelle Année très festif. Déguisement et boule à facettes, tout est prêt ! 🇬🇧 Alan Roura is getting ready to celebrate a very festive New Year's Eve. Costume and disco ball, everything is set! ------------------------ ➡️ SUIVEZ-NOUS ! // FOLLOW US ! 🔗 Website : www.vendeeglobe.org 📸 Instagram : https://www.instagram.com/vendeeglobe/ 🐦 Twitter FR : https://twitter.com/VendeeGlobe | Twitter ENG : https://twitter.com/VendeeGlobeENG 🕺 TikTok : https://www.tiktok.com/@vendee_globe 💻 Facebook : https://www.facebook.com/VendeeGlobe 💼 LinkedIn : https://www.linkedin.com/company/vendée-globe/

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Classic Norfolk Broads sailing boat hire. Yacht charter on the stunning rivers and lakes of the Norfolk broads. Bare boat sailing holidays fully equipped for your comfort and enjoyment. If you would like to learn more please visit our web site at Oliverssailingholidays.co.uk

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