In the short time I've been here, I have found that Wikipedia is quite addicting, specially for an informationjunkie like myself. I can spend several hours a day here, either working on an article or just reading. So am I a Wikipediholic? According to the Wikipediholism test I am "really overdoing myself. I need to take a wikibreak for a few days." I scored a 3331 on the test. How about you, what is your score?
Discovery clears the tower as it launches July 4th, 2006 on STS-121
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)