This Isn't A Christmas Decoration

This isn't a trippy Christmas decoration. Nor is it some form of modern art take on a flower. In fact, it's the result of something much more technical — and it's even won an award for its beauty.

You're actually looking at the result of a scientific experiment performed by engineer Hoi Dick Ng from Concordia University in Montreal. It involved a tank of water, with a cylindrical gate lodged in the middle. Ng kept the water level inside the gate lower than in the surrounding tank; then, when the gate was suddenly removed, high-speed cameras captured the moment when water rushed into the empty space.

The original images were black and white, but this image has been colourised according to pixel darkness — the result, more or less, shows the shape and height of the water's surface just after the gate was removed. It looks so good that the image actually won a prize from the American Institute of Physics, when it was named the best fluid dynamics image of 2012. Prize or not, it looks stunning — why not print it out and hang it on your tree? [American Institute of Physics via Scientific American]

Picture: American Institute of Physics

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