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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30 seconds of fun during a stressful time of social distancing during COVID19. We know it's tough out there for everyone including our diver friends. We are just wanting to bring a few smiles to our friends.

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Καντηλίτσα 1 Αν θέλετε να βοηθήσετε το κανάλι μου https://streamlabs.com/cyprussailingtv https://www.paypal.com/paypalme/CSTVdonates https://my-store-ca7fc8.creator-spring.com/ Γεια σε όλους αν θέλετε μπείτε στο κανάλι μας discord https://discord.gg/KnGGjcfyS9 Σας ευχαριστούμε πολύ που είδατε αυτό το βίντεο! Αν σας άρεσε, παρακαλούμε κάντε ένα like , καθώς και εγγραφή στο κανάλι μας, αν δεν το έχετε κάνει ήδη. Είναι δωρεάν! Μπορείτε να εγγραφείτε κάνοντας κλικ εδώ: http://www.youtube.com/c/CyprusSailingTV?sub_confirmation=1 *Τα βίντεο που χρησιμοποιούνται σε αυτή τη συλλογή πληρούν τις προϋποθέσεις για δίκαιη χρήση* Argyris Gregoriou - Cyprus Sailing Tv owner Offshore Sailing Skipper Instructor/ Εκπαιδευτής Ιστιοπλοΐας Ανοιχτής θαλάσσης Master Of Yacht Offshore 200GT VHF Operator STCW crowd management training in a-v/2-1 STCW Basic Safety Training vi/1 a-vi/1.2 Sailing dinghy Instructor/Εκπαιδευτής Ακαδημιών Ιστιοπλοΐας (world sailing national training program) Sailing dinghy coach/ Προπονητή Ιστιοπλοΐας Τριγώνου (world sailing national training program) National Race Officer Sailing article columnist /autho/Αρθρογράφος https://cyprussailingtv.com/ ★★Social Media★★ ✔Facebook https://www.facebook.com/cyprussailingtv/ ✔Instagram https://www.instagram.com/cyprus_sailing_tv ✔twitter https://twitter.com/cyprussailing ✔Discord https://discord.gg/KnGGjcfyS9

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