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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The perfect tender doesn’t…. Oh wait. We’ve got the SUR ST290 & ST310 ready to go! Either as a tender or stand alone load of fun on the water. Contact us today for summer promotions! Available in Poole and Southampton. #tender #superyacht #megayacht #dinghy #newboat #boating #bateswharf #forsale

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Say hello to Stormvogel; a timeless offshore icon and now the standout classic in our growing fleet. She's not just graceful; she's formidable too. In the 2023 Rolex Fastnet Race, Stormvogel claimed 6th in IRC Zero (and placed 11th overall in IRC) from a massive field of 358 starters. Launched in 1961, Stormvogel was one of the world's first lightweight maxis-designed by Van de Stadt, with input from Laurent Giles-and built of cold-moulded wood. She won Line Honours in her first-ever Fastnet, and over six decades later continues to sail-and compete-with unwavering spirit. With more than 50 entries now confirmed and less than 2 months remaining until the 2025 Rolex Middle Sea Race, anticipation is building. @rolexmiddlesearace

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