'schlieren imagery', shock wave, supersonic jet. 震波, 超音速噴射機

This schlieren image dramatically displays the shock wave of a supersonic jet flying over the Mojave Desert. 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
Supersonic images could pave the way for the ‘son of Concorde’ | Daily Mail Online
Read more: http://www.dailymail.co.uk/sciencetech/article-3210763/The-supersonic-images-pave-way-son-Concorde-Incredible-photos-captures-sonic-boom-aircraft.html#ixzz3jwaq9Ky1
Follow us: @MailOnline on Twitter | DailyMail on Facebook
Shock wave - Wikipedia, the free encyclopedia
震波