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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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Some views of the Herbert Glacier in Alaska with Coastal Helicopters.

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Prepare for an adrenaline-pumping adventure where visibility is limited and a whole new universe of #underwater #marinelife awaits to be discovered. In the darkness, your senses sharpen as you traverse the unknown, guided by the flickering beam of your dive light. The adrenaline levels rise as you come face to face with #seacritters that appear out of nowhere and straight to your sight. It's a dance between adrenaline and awe, the night dive awaits, ready to reveal the extraordinary realm that exists in the depths of the #ocean. Get in touch with us right now to plan your #nightdive! Reserve your spot now from as low as $191. ✉️ info@LaGaligoLiveaboard.com 💬 +62 812 2000 2025 (WhatsApp) 🌐 www.LaGaligoLiveaboard.com 🌐 Trip.LaGaligoLiveaboard.com (Schedule & Rates) ~~~~ #scubadiving #scuba #diving #diver #liveaboard #divetrips

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