Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Edited from to 1/4th 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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Seja também um apoiador do #SAL: https://apoia.se/hashtagsal Neste post do Mural lá no APOIAse tem o link para o nosso grupo do Telegram: https://apoia.se/hashtagsal/contents/view/Grupo-de-Apoiadores-do-SAL-no-Telegram.-CYgvVmY44?page=1#0 É só fazer o login com a sua conta 😀 Seja membro do #SAL no YouTube e ganhe benefícios exclusivos aqui dentro do Youtube, como resposta prioritária de comentários e fundos de tela (wallpapers) do #SAL: https://www.youtube.com/channel/UCj8_DeCUB0uL4cJwFmiQfMQ/join Conheças as mochilas e chaveiros do #SAL: https://www.ligarte.com.br Conheça as camisetas e moletons do #SAL: https://www.lolja.com.br/creators/hashtag-sal/ #veleiro

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Ghana Praises with min.Jay Arthur

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Woke up somewhere new again... Life on the water means long walks and longer chats and sunsets that stop you in the tracks It's the rhythm that we have grown to love - chasing horizons, eating local, going offline and framing memories with each tide Just us moving with the wind making every beach our backyard and everyday an adventure .. This is freedom, this is our sailing life #sailing #Indian Sailors #thereeva project

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