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!!

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bordare: (v.) (Conduzione) to trim the sail, to spread the sail Termine obsoleto oggi sostituito da "regolare le vele" o "cazzare/lascare le vele" bordo: (s.m.) [A]. (Terminologia) side Lato della nave (bordo di dritta e bordo di sinistra). Riferito al vento si dice bordo di sopravvento e di sottovento. Si indica in questo modo anche ciascun tratto di bordeggio che un veliero compie per risalire il vento. Si usano anche i sinonimi "lato" e "fianco". [B]. a b. (Terminologia) on board, aboard Significa sull'imbarcazione", [C]. salire a b. (Terminologia) to board Salire sull'imbarcazione. [D]. fuori (Terminologia) outboard Fuori dell'imbarcazione. [E]. virare di b. (Conduzione) to put the boat about Cambio di mura di un veliero, cioè passaggio della prua al vento (virare di prua), per prendere il vento dal bordo opposto al precedente. E' parte del bordeggio. [F]. b. libero (Terminologia) free board Nelle navi si chiama così l'altezza del ponte principale dal livello del mare, a pieno carico e alla massima immersione consentita. Nelle imbarcazioni da diporto analogamente corrisponde alla massima altezza della coperta dal livello del mare.

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Converting an old, half-sunk sailboat into a solar powered, battery backup electric cruiser with twin ePropulsion Navy outboards comes with a LOT of work…but it can be fun!

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It's just three months until teams line up and we get a glimpse at who may have the fastest AC75. SUBSCRIBE to the official America's Cup channel: www.youtube.com/americascup Like America’s Cup On Facebook: www.facebook.com/americascup Follow America’s Cup On Twitter: www.twitter.com/americascup Follow America’s Cup On Instagram: www.instagram.com/americascup Stay up to date with the America’s Cup newsletter: www.americascup.com/en/newsletter The 36th America's Cup presented by Prada will be contested by the winner of the 2017 America's Cup, the Royal New Zealand Yacht Squadron represented by their team, Emirates Team New Zealand, and the winner of the Prada Cup, the challenger selection series which takes place in January–February in 2021. #AmericasCup #AC36 #Auckland2021

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Drone video of the new X5 SAIL by XQUISITE YACHTS

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