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#ellipse — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #ellipse, aggregated by home.social.

  1. #MDR:
    "
    Kürzester Tag ist nicht gleich frühester Sonnenuntergang
    "
    "Warum fällt der kürzeste Tag des Jahres nicht mit dem frühesten Sonnenuntergang zusammen? Viele kennen die Wintersonnenwende, doch nur wenige wissen, dass der früheste Sonnenuntergang bereits davor stattfindet. .."

    mdr.de/wissen/astronomie-raumf

    15.12.2025

    #Astronomie #Ellipse #Erde #Erdachse #Umlaufbahn #Wintersonnenwende

  2. #MDR:
    "
    Kürzester Tag ist nicht gleich frühester Sonnenuntergang
    "
    "Warum fällt der kürzeste Tag des Jahres nicht mit dem frühesten Sonnenuntergang zusammen? Viele kennen die Wintersonnenwende, doch nur wenige wissen, dass der früheste Sonnenuntergang bereits davor stattfindet. .."

    mdr.de/wissen/astronomie-raumf

    15.12.2025

    #Astronomie #Ellipse #Erde #Erdachse #Umlaufbahn #Wintersonnenwende

  3. And so, here are four functions to demonstrate it. The default resolution of the plotting routine is crude, leading to #Aliasing and so the mesh has to be refined somewhat.

    Here are three #ConicSections and one #Trigonometric functions.

    An #Ellipse
    A #Parabola.
    A #Hyperbola.
    A rotating #Tangent function.

    #MyWork #CCBYSA #Maxima #Mathematics #Geometry #FreeSoftware

  4. And so, here are four functions to demonstrate it. The default resolution of the plotting routine is crude, leading to #Aliasing and so the mesh has to be refined somewhat.

    Here are three #ConicSections and one #Trigonometric functions.

    An #Ellipse
    A #Parabola.
    A #Hyperbola.
    A rotating #Tangent function.

    #MyWork #CCBYSA #Maxima #Mathematics #Geometry #FreeSoftware

  5. @mastodonmigration @KamalaHarrisWin I think there is a huge overflow crowd back behind the main group too. It looks like the back of a huge screen in the distance. #ellipserally #ellipse #kamalaharris

  6. @mastodonmigration @KamalaHarrisWin I think there is a huge overflow crowd back behind the main group too. It looks like the back of a huge screen in the distance. #ellipserally #ellipse #kamalaharris

  7. @mastodonmigration @KamalaHarrisWin I think there is a huge overflow crowd back behind the main group too. It looks like the back of a huge screen in the distance. #ellipserally #ellipse #kamalaharris

  8. @mastodonmigration @KamalaHarrisWin I think there is a huge overflow crowd back behind the main group too. It looks like the back of a huge screen in the distance. #ellipserally #ellipse #kamalaharris

  9. @mastodonmigration @KamalaHarrisWin I think there is a huge overflow crowd back behind the main group too. It looks like the back of a huge screen in the distance. #ellipserally #ellipse #kamalaharris

  10. My wife was looking at the properties of #ellipses such as the one where the sum of the distance of all points on the #ellipse from the two foci are the same and how that relates to the standard equation of an ellipse. I wrote these notes up neatly using #LaTeX to explain the relationship.

    To put it up here, I converted the #PostScript pages to #PNG format using #GNU #Gimp and the figure was produced using #Tgif.

    #Mathematics #Geometry #TwoDimensional #PlaneCurve #CartesianCoordinates #CCBYSA