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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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Pewaukee's own Quinn Kaiser & John Lieber won Race Five at the X Inland Championship hosted by Pewaukee Yacht Club. They currently sit in second place, just a few points shy of the lead. Stay tuned for more racing! See the Story: bit.ly/2018XInlandMedia
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Family DIY old wooden sailboat restoration #familyvlog #vlog #diy #sailing #shorts
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Set Sail and enjoy the stunning show of colors on a private sunset cruise aboard MSV Sophia, our 39 foot Lagoon luxury catamaran, live this spectacular moment with your loved ones!
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