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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Do you dream of going cruising on a live aboard sailboat? All the brands like Beneteau, Jeanneau, Catalina, Hunter, and Dufour have models today that will do the job but hey’re very expensive. If only there were an older sailboat with all the features for less of the cost. Something fast, designed by Bruce Farr. Something proven as a charter boat the whole family could sail on. This week, the forgotten 50 footer from Beneteau. The Bruce Far sailboat that you can buy today for less than $200,000.

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We're in the UK right now, back at Liz's mum's home of Rye in East Sussex. This ancient port town in steeped in nautical history and boats come right in to the town centre to moor up. We thought we'd do a little bit of recording down by the slipway, so with Liz leading the way we venture to the water's edge. Liz, however, doesn't clock where the slipway ends and the mud begins.

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supraba phinisi yacht sailing in komodo national park, indonesia

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