Marcel Minnaert's Human Design Chart

6/2 Splenic Manifestor

Dutch astronomer of Belgian origin who became a pioneer of solar research. He specialized in spectroscopy and the study of stellar atmospheres.
Minnaert was also interested in bubbles and musical nature of the sounds made by running water. In 1933 he published a solution for the acoustic resonance frequency of a single bubble in water, the so-called Minnaert resonance.
In 1937, he was appointed director of the stellar observatory Sonnenborgh in Utrecht and full professor in astronomy at the university. In 1940, he published his famous Utrecht Atlas of the solar spectrum. In 1941, he invented the Minnaert function, which is used in optical measurements of celestial bodies.
During the German occupation of the Netherlands in World War II, he was imprisoned by the Germans because of his left-wing, anti-fascist sympathies. During his incarceration, he taught physics and astronomy to his fellow prisoners. After the War, he was one of the founders of the Mathematisch Centrum in Amsterdam.
He died in Utrecht on 26 October 1970.
Link to Wikipedia biography

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Marcel Minnaert

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