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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Could you imagine selling everything you own to move onto a sailboat? If not, what’s holding you back? To get insights into the actual expenses of boat life vs. land life, check out my blog post on my website: SailorgirlKristina.com 😉⛵️🌊 #boatlife #sailing #expenses #howto #sailorgirl #caribbean #islandlife #blogger

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style, and function, built by Sanlorenzo in 2021. LA LUNA will be on display at the Palm Beach International Boat Show from March 19 – March 23, 2025. Contact us to arrange a viewing. Asking price - $11,950,000 @sanlorenzo Video: jed seaviewsmedia

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Follow World Sailing 🌍⛵️ on: Facebook ➡️ www.facebook.com/worldsailingofficial Instagram ➡️ www.instagram.com/worldsailingofficial Twitter ➡️ www.twitter.com/worldsailing Website ➡️ www.sailing.org Newsletter ➡️ www.sailing.org/newsletter-sign-up

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Gringo curtindo o velejo em Angra, na popa Ilha Grande.

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