Some remarks on Danjon's law

Details Some remarks on Danjon's law Some remarks on Danjon's law

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974moon...11..137l&link_type=abstract

The Moon, vol. 11, Sept.-Oct. 1974, p. 137-140.

Physics

Optics

1

Atmospheric Scattering, Luminous Intensity, Lunar Eclipses, Solar Cycles, Upper Atmosphere, Atmospheric Optics, Atmospheric Stratification, Light Scattering, Night Sky, Twilight Glow

Scientific paper

A new discussion of lunar eclipses since 1900 (Link, 1974) has confirmed the validity of Danjon's (1920) law describing the variations of the luminosity of lunar eclipses during the solar cycle of 11 years. In addition it was found that the internal mechanism of the law is not the absorption of light in the terrestrial atmosphere as Danjon originally assumed, but an additional light to the normal solar illumination of the eclipsed moon. A hypothetical scattering layer in the upper atmosphere is unable to explain quantitatively the variations of lunar eclipses described by Danjon's law.

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