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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St. Pete's Beach Part 2 - Join us as we snorkel the underwater ruins of Fort Dade at Egmont Key, explore Shell Key for sand dollars and birdlife, and ride with wild dolphins jumping in our wake on the way back to Gulfport. We end the day watching a stunning sunset at the iconic Don CeSar at St. Pete's Beach. Florida history, wildlife, and pure Gulf Coast adventure all in one episode! Cheers - Rodney & Cyndi #EgmontKey #FortDade #ShellKey #DonCeSar #Dolphins #FloridaVlog #SailingIntoNirvana #sailingcouple @SailingIntoNirvana Website: http://sailingintonirvana.com Social: http://facebook.com/@sailingintonirvana Patreon: http://patreon.com/sailingintonirvana Fire Dragon Spices: http://piraterodneys.com ___________________________________________________ 🎵 Copyrighted music licensed from Lickd. https://lickd.co Shadow Theory by Tom Boddy, https://t.lickd.co/l/NoPpj2yDr9w

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One of the most dangerous maneuvers in sailing is the accidental jibe. It's not just about knowing how to jibe — it's even more important to recognize when you're about to jibe unintentionally because you've gone too far downwind. Want to master all the essential sailing techniques? Contact us directly to book your training today! https://epicnavigator.com/contact/ subscribe to our news letter to get updates about future sailing trips

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Eastend Ketch https://www.scanboat.com/en/17372552

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