Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Unedited at 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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Any sailing plans for spring 2025? Check out the classic regatta calendar and join us on board! DM us for more info! #sailing #regatta #classicboat #classicregatta #barcavela #sailors #yachtlife #travel #ocean #instasail #boatlife #noblesseyachts #sea #shorts

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This was my first time back in 6 months, it is so good to be back on the water

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Forespar and John Kretschmer team up to show you how to dip pole jibe your spinnaker. http://www.forespar.com/sail-pole-accessories.shtml

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Our Harmony Cruises are perfect for those looking for a blend of sightseeing, relaxing and socialising on a small ship cruise. Best suited for couples, young professionals and ‘young at heart’ travellers, these cruises from Athens with all cabins including a private bathroom and air-conditioning. Ideal for 18 to 39s ! Visit our website to find out more Website : https://sail-ingreece.com/greece-cruises/harmony-cruises/ Instagram : sail_ingreece

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