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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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スターリング・エンジン
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Rapsody R 32 https://www.scanboat.com/en/17225874
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Nel tentativo di entrare nel porto turistico di Catanzaro Lido la barca a vela Meridian Chaser, battente bandiera canadese, si distrugge sugli scogli del molo . La causa si puo ascrivere a diverse circostanze contrarie quali il poco fondale, la risacca , il forte vento di scirocco che rendeva pericolosissimo l'avvicinamento e principalmente ad una cima impigliata nell'asse dell'elica. Infatti in altri filmati si vede la barca procedere con il motore fuoribordo ,solitamente in uso al tender, acceso ma poco funzionale. Risultato un disperso , per altro conosciuto in loco, dove aveva sostato tempo addietro in transito con una barca diversa. Tempestivo l'arrivo di carabinieri e vigili del fuoco.
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