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User:Pjf

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Hi, I'm Paul Fenwick (in many places, just pjf). I nominally live in Melbourne, and run Perl Training Australia.

Spoken Articles[edit]


If you're here, then you must be bored. Here's a picture for entertainment:


Oblique shock
An oblique shock is a shock wave that, unlike a normal shock, is inclined with respect to the direction of incoming air. It occurs when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses. This photograph shows an oblique shock at the nose of a Northrop T-38 Talon aircraft, made visible through Schlieren photography.Photograph credit: NASA & US Air Force (J.T. Heineck, Ed Schairer, Maj. Jonathan Orso, Maj. Jeremy Vanderhal)

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