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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!!
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https://wildheartyogi.com/events-page-2025/
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L'equipaggio Race & Cruise a bordo di Kala Nag durante la #regata #Veleziana 2014 a Venezia
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Coral groupers can be seen on most reefs in Raja Ampat. They are a very colourful addition to the underwater seascape. Photographers might notice that they are quite curious and will often keep circling around to check if the camera is still pointing in their direction! Fun to watch and wonderful to capture on film.
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Anmeldung über radiosailing.de Mehr Infos unter myc-muenchen.de
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Primeira velejada de 2022 na Represa Guarapiranga. O vento estava acima da previsão, o que foi ótimo para este dia! Sol e brisa fresca, tudo para deixar o dia perfeito!
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