Dhaka, Sunday, 20, October 2019
Sci-Tech

Best 20 Technology Pictures in 2015

The shock wave of a T-38C supersonic jet flying over the Mojave Desert in California is seen in an undated NASA schlieren image released August 25, 2015. Researchers used NASA-developed image processing software to remove the desert background, then combined and averaged multiple frames to produce a clear picture of the shock waves. Schlieren imaging reveals shock waves due to air density gradient and the accompanying change in refractive index, according to a NASA news release.

Photo: Reuters
14 Dec 2015, 15:47
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