![]() ![]() ![]() Extraordinary or abnormal celestial events were particularly noted because of their astrological significance. ![]() China has maintained the longest continuous historical records of celestial phenomena in the world. Observation of Celestial Phenomena in Ancient Chinaīecause of the need for calendar-making and portent astrology, the Chinese were diligent and meticulous observers of celestial phenomena. The present invention is a system and method of visualizing fluid flow around an object, such as an aircraft or wind turbine, by aligning the object between an imaging system and a celestial object having a speckled background, taking images, and comparing those images to obtain fluid flow visualization. Background Oriented Schlieren Using Celestial Objects ![]()
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