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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Night chart navigation and radar practice during our ASA sailing course in Croatia #sailing #radar #chart #night @adriaticsailingacademy16

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We're currently building our third vessel, S/Y Vela. Take a minute and check out the progress we're making - she's coming right along! S/Y Vela will be sailing on her first Gap Year and Study Abroad voyage in February 2020. Music by Joakim Karud http://youtube.com/joakimkarud

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► Since 1973, the La Rochelle Boat Show, known simply as “Le Grand Pavois” in French, has been THE not-to-be-missed afloat show on France’s Atlantic coast. With 750 boats on display and a record 80,000 visitors, the 2023 event (that ran from September 20 to 25, so a little earlier than usual) clearly benefited from the scheduled absence of the Paris Boat Show at the end of the year. According to the organizers, no more than 10 square feet was left available at the Port des Minimes! Of course, the Multihulls World team was there. We were able to preview the Tender Cat, a small all-purpose catamaran dinghy built in epoxy-ply, the Greencat 52, a custom-built eco-responsible catamaran, the impressive NEEL 52, the Astrea 42 Smart Electric, and finally Lagoon’s new Furling Boom. ► Become a FREE SUBSCRIBER to Multihulls World's YouTube page now - https://www.youtube.com/c/MultihullsWorld ► Log on to our website to discover over 500 multihulls tests! Subscribe to our newsletter to take advantage of our promotions and boat show invitations! https://www.multihulls-world.com/ ► Follow us on Facebook! https://m.facebook.com/MultihullsWorldMag/?locale2=fr_FR ► Discover us on Instagram! https://www.instagram.com/multihulls_world/ ► Follow our multi news on X - https://twitter.com/multihullsworld?lang=fr ► Let’s talk about business on Linkedin https://www.linkedin.com/company/multicoques-mag-multihulls-world/ ► Like us on TikTok! https://www.tiktok.com/@multihullsworldmag @grandpavoisorganisation #grandpavoisofficiel #multihullsworld #mariachanau #larochelle #multihulls #multicoquesmag #multicoquesmag #catamaran

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