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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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Gear Up with Zim and @WestCoastSailing We have the gear you need at a great price, backed by fast shipping and outstanding service. As proud partners of @collegesailing Zim and West Coast Sailing offer 15% discounts to student athletes on all apparel and soft goods. Get all the top brands including Gill, Rooster, Zhik, Ronstan, and more. Go to https://zimsailing.com/college-sailing/ or https://westcoastsailing.net/scholastic-sailing for details and to apply for your student athlete discount code Today! Video created by @chrisloveproductions

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Our Wish List : https://www.amazon.com/hz/wishlist/ls/2FD71IQFT9P8W?ref_=wl_share Our Gear : CAMERAS: DJI Osmo Action : https://amzn.to/3mzCrwu Go Pro : https://amzn.to/35IaLPp MICROFONES : Deity V-Mic D3 Pro Super : https://amzn.to/37QGssk Moukey MCM-1 DSLR : https://amzn.to/3e8jsWQ GIMBAL : https://amzn.to/35LECGu Check our website !!! http://www.svnala.com/ Follow Us on Instagram : http://instagram.com/sailingnala/ Support Us on PayPal : https://www.paypal.me/sailingnala Support Us on Patreon : https://www.patreon.com/SailingNala

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