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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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Do you love or are tempted to explore a drop-off walls dive site? The thrill is real, it’s like plunging into the abyss, where the ocean floor suddenly disappears and adrenaline takes over. Is that the kind of diving experience you’re looking for? Well, Raja Ampat is the perfect dive place for you. Significant drop-offs and walls may be found at several Raja Ampat dive sites, which can make them both intriguing and challenging. Not to forget, the walls are riched with abundant #marinelife that will complete your dive experience. Head to our 🔗 link in the bio to find out why #RajaAmpat should be your next diving destination. Secure your spot today for Indonesia’s #BestLiveaboard for as little as a $337 deposit. ✉️ info@LaGaligoLiveaboard.com 💬 +62 812 2000 2025 (WhatsApp) 🌐 www.LaGaligoLiveaboard.com 🌐 Trip.LaGaligoLiveaboard.com (Schedule & Rates) ~~~~ #ScubaDiving #Scuba #Diving #Diver #Liveaboard #DiveTrips #WonderfulIndonesia #InTheBlue

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The Fastnet is one of sailing’s most iconic and challenging races. This year’s edition attracted the biggest fleet to date as 388 yachts set sail on what would prove a record-breaking event as the battle for line honours went right down to the wire. Also in the Solent, the sport’s fastest fleet racing series made its European debut in equally dramatic style as SailGP broke both records and carbon out on the water. It’s been a busy few weeks in Japan as well as the 470s played out their world championships on the waters of Enoshima before all ten classes battled it out in the Olympic test event just a year out from the start of the Games. And the Olympic news doesn’t stop there, as World Sailing announced more details of an exciting new offshore class for the 2024 Games in Paris. Meanwhile back in Europe the Diam 24s concluded their own Tour De France in the Tour Voile, while the 52 Super Series was taking advantage of great conditions in Cascais, Portugal to put on another masterclass.

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