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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Turn your sound on and see why our Number One tip in our latest video is to make sure you learn how to navigate using satellite imagery. Check out our "Our Top 10 Essentials List to Have BEFORE Sailing into Indonesia - All Learned from Experience" Here - https://youtu.be/8WAawGntkp0 If you are looking for a couple of the items we talk about in the Episode you can find them here 👇 Hawkeye DT1H Handheld Depth Finder with Temperature, 300 Feet https://amzn.to/458ipkl GlobalSat BU-353N-10Hz USB GPS Receiver, Black https://amzn.to/4c4gAaf

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