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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💥 Sub for more! https://www.youtube.com/lyfeuntethered?sub_confirmation=1 The pressure on the Titan Sub as it approached the Titanic was unimaginable. And it really wasn't build for this. Carbon fiber. Um, no. Mistake. Deadly one. This simuation give you an idea of how the implosion went down, but in reality, it was unimaginably faster than this. At least the crew never saw it coming and felt nothing. So sad. https://youtube.com/shorts/lGkRFEXDl4c #titanic #titan #sub

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Ed Penn discusses the progress being made on the hull 03 bulkheads. #curemarine #boatbuilder #boatbuilding #carbonfibre #carbonfiber

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https://store.playstation.com/#!/tid=CUSA00182_00

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Even the anchorage which was protected by two sea walls was rough, I filmed this inside the harbor heading from Monroe Harbor to the Chicago Lock. There were waves crashing and cascading on the outer seawall--wish I would have filmed them as the morning sunrise made them visible. StarSloop on the Loop Short # 5 #aglca #Starsloop #greatloop #macgregor #MTLSA #boatdog

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