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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Kaminoseki port is the 54th port Wahine and I have moored in. I met the groundskeeper for the beautiful and expansive lawn in the port. If you are a never-too-later like me check out the free resources at http://bit.ly/3w9OpUJ To Track Wahine please consider becoming a Patron or sponsor. http://bit.ly/3WmPG5r

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