File:Mannheim Sonnenuntergang.webm

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    Summary

    Description
    Deutsch: Zeitrafferaufnahme eines Sonnenuntergangs über Mannheim. Das Video dokumentiert drei zentrale atmosphärische Phänomene:
    • Astronomische Refraktion (terrestrisch beeinflusst): Die lichtbrechende Eigenschaft der horizontnahen Luftschichten sorgt für eine optische Hebung und die markante elliptische Abplattung der Sonnenscheibe.
    • Atmosphärische Dispersion: Die Atmosphäre wirkt wie ein Prisma und spaltet das Licht auf, was als gelblich-grüner Saum am oberen Sonnenrand sichtbar wird.
    • Rayleigh-Streuung: Durch die Streuung des kurzwelligen Lichts auf dem langen Weg durch die Atmosphäre entstehen die charakteristischen Rot- und Orangetöne des Sonnenuntergangs.
    English: Time-lapse video of a sunset over Mannheim, documenting three key atmospheric phenomena:
    • Astronomical refraction (terrestrially influenced): Refraction in low-altitude air layers causes optical lifting and the distinct elliptical flattening of the solar disk.
    • Atmospheric dispersion: The atmosphere acts as a prism, creating chromatic effects such as the yellowish-green fringe on the upper solar limb.
    • Rayleigh scattering: The scattering of short-wavelength light over the long atmospheric path results in the characteristic red and orange hues of the sunset.
    Français : Vidéo en accéléré d'un coucher de soleil sur Mannheim, documentant trois phénomènes atmosphériques clés :
    • Réfraction astronomique (sous influence terrestre) : La réfraction dans les couches d'air proches de l'horizon provoque un soulèvement optique et l'aplatissement elliptique marqué du disque solaire.
    • Dispersion atmosphérique : L'atmosphère agit comme un prisme, créant des effets chromatiques comme la frange jaune-vert sur le bord supérieur du soleil.
    • Diffusion de Rayleigh : La diffusion de la lumière à courte longueur d'onde sur le long trajet atmosphérique produit les teintes rouges et orangées caractéristiques du coucher de soleil.
    Date
    Source Own work
    Author Georg Buzin

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    Captions

    Sunset showing astronomical refraction (terrestrial path) with elliptical flattening and dispersion.

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    1,242,106 byte

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    12.3 second

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    1,078 pixel

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    video/webm

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    9193072a98158f6d15edd1c70a4341a1555d9ea3

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    current00:48, 22 April 2026 (1.18 MB)wikimediacommons>Georg BuzinImported media from uploads:ab825cc8-3dd1-11f1-8782-0aab4aa2be68

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