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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!!

donotpushhere

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Some details on what we did for 20 hours.

dannyboyspace

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Yacht Charter in Cuba - Katamaran von Platten Sailing Cuba. Besuche die kleinen Inseln rund um Cayo Largo. Taucht ein in die Welt von Cuba Sailing Yacht Charter und lasst euch von kubanischen Seglern auf eine unvergessliche Reise in das Paradies der Karibik entführen. Erfahrt die Neuigkeiten aus Kuba und entdeckt das unberührte Segelparadies. Unsere erfahrenen Segler zeigen euch nicht nur die atemberaubende Natur Kubas, sondern auch die vielen versteckten Buchten, die noch heute von den Geschichten der Piraten erzählen, die hier einst nach reicher Beute Ausschau hielten. Unberührte Inselwelt Naturbelassene, einsame Buchten Traumhafte Strände Bunte Unterwasserwelt mit intakten Korallenriffen und neugierigen Wasserschildkröten

plattensailingcuba-yachtch2502

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Watch and listen as the Fisher Price Peek-a-boo Press and Go Circus Train chuffs along

noisytoysuk4864

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François Gabart s'active à bord de Macif.

vendeeglobetv

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I weekend in vela sono pieni di scherzi, risate e momenti indimenticabili. Il divertimento non ha limiti: dal tuffo improvviso nel mare alle battaglie d'acqua con gli amici, ogni giorno è una nuova avventura da condividere insieme.  Preparati a essere travolto dai balli scatenati sul ponte e a sfidare i tuoi amici in giochi divertenti.  Non importa se sei un esperto di navigazione o un principiante curioso, qui ci sono risate per tutti!  Salta a bordo e scopri il lato più spassoso della vita in barca. 🌊😆🎉 Voglia di scappare in barca a vela? Salpiamo, per te una sorpresa se prenoti entro giugno🌞😍 * * * #vacanze2023 #barcaavela #sailingholidays #sailingvacation

weekend_a_vela

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