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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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Nej det är inte Kanadagås, det är vitkindad gås. Förväntade mig inte se det mitt i Stockholm. Men de kanske varit här länge vad vet jag? :)
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En kanontur från Åssjön till Sandnäset och sen ner till Lugnvik
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Music: https://www.storyblocks.com/audio Join me on Instagram: Everything big - https://www.instagram.com/project.yet.unknown.main/ Everything small - https://www.instagram.com/project_yet_unknown/ Check out my pictures on ... Scopio: http://bit.ly/2OtkRLg Shutterstock: https://shutr.bz/32RUsz1
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