Marcel Gilles Jozef Minnaert

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Minnaert, Marcel Gilles Jozef

 

Born Feb. 12, 1893, in Bruges, Flanders; died Oct. 26, 1970, in Utrecht. Dutch astrophysicist; specialist in solar physics.

Minnaert studied at Ghent between 1910 and 1922 and at Leiden and Utrecht between 1919 and 1922; he received a doctorate in biology in 1914 and a doctorate in mathematics in 1925. In 1936 he was appointed a professor of astronomy and director of the Utrecht Observatory. Between 1942 and 1944 he was imprisoned in a Nazi concentration camp.

Minnaert’s works dealt with problems in the precision photometry of the solar spectrum, the physics of the solar atmosphere, and methods for the quantitative spectral analysis of the sun and stars. In 1940, together with the Dutch astronomers G. Mulders and J. Houtgast, he compiled the extensive Photometric Atlas of the Solar Spectrum. Minnaert also wrote a number of popular works on astronomy.

WORKS

In Russian translation:
Svet i tsvet v prirode, 2nd ed. Moscow, 1969.
Prakticheskaia astronomiia. Moscow, 1971.
References in periodicals archive ?
Marcel Minnaert reported Opik's finding while covering a planetary colloquium held in Liege, Belgium, in July 1962.
Bearing the name of Marcel Minnaert, a renowned Dutch astrophysicist, the Minnaert building houses facilities for Utrecht University's geophysics department.
In Light and Color in the Outdoors (Springer-Verlag, 1993), Belgian astronomer Marcel Minnaert tells how you can count the supernumerary bows and look at their spacing to gauge the size of the raindrops producing them.
In his classic book Light and Color in the Outdoors (Springer-Verlag, 1993), Belgian astronomer Marcel Minnaert noted, "Generally speaking, we are inclined to call the predominating color in our surroundings white or nearly white.
But then, during that summer of 1976, I read Light and Colour in the Open Air by Dutch astronomer Marcel Minnaert (1893-1970).
Years ago, Netherlands astronomer Marcel Minnaert did an experiment.
Marcel Minnaert, a pioneering authority on optics in nature, has described these phenomena in a section called "Differences between an Object and its Reflected Image" in his classic book The Nature of Light & Colour in the Open Air.
For instance, in his book Light and Color in the Outdoors (Springer-Verlag, 1993), Marcel Minnaert describes the Brush as a slender and continuous yellow ellipse, like a cucumber slightly pinched in the middle, with a small blue cloud on either side of the pinch.
Marcel Minnaert also discusses the phenomenon in his classic book, Light and Color in the Outdoors (Springer-Verlag, 1993), as does John Naylor in Out of the Blue: A 24-Hour Skywatcher's Guide (Cambridge University Press, 2002).
A book by that title (later reprinted in 1983 as Light and Color in the Outdoors) by the late Dutch astronomer Marcel Minnaert inspired Naylor to look at the daytime sky, to "look afresh at things I had all but ignored.
Belgian-born Dutch astronomer Marcel Minnaert wrote about this phenomenon in his book Light and Colour in the Open Air (published later as Light and Color in the Outdoors).
In The Nature of Light and Color in the Outdoors, Marcel Minnaert mentions coronas in a clear sky but does not discuss their shape.