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!!

0

0

0

21

0

0

0

0

513

How to Sail an Ideal 18 — Ideally The Ideal 18 is a simple boat. Do the basics well and it feels incredible. Ignore them and it won’t yell at you… it’ll just go slower. This video is a fun look at how to make an Ideal 18 feel smooth, balanced, and suspiciously quick—without adding more strings, gadgets, or emotional baggage. Flat is fast. Restraint is a skill. Tiny adjustments matter more than big ones. If you sail Ideal 18s (or race boats that reward fundamentals), this one’s for you.

0

0

0

179

Ciao amici! Siete pronti per l'estate? Noi siamo carichi e vogliamo augurarvi una stagione piena di serenità e divertimento! 🌞 Non vediamo l'ora di condividere con voi i nostri consigli per godervi al meglio questi mesi! #vacanze2023 #barcaavela #vacanzemare #vacanzeinbarca #sardegnaterraemare #isoleolie #maresiciliano #costaazzurra #marmediterraneo

0

0

0

225

🌊 As the largest city on the Istrian Archipelago, Pula is a treasure trove of history and natural beauty, attracting yacht enthusiasts and holidaymakers alike. At the center of this enchanting destination is Marina Veruda, a stunning harbor that perfectly combines modern amenities with the allure of the Mediterranean. #sailing #marinaveruda #croatia

0

0

0

111