File:Sun-Ecliptic-4Seasons-aDayOnEarth.gif

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Sun-Ecliptic-4Seasons-aDayOnEarth.gif(320 × 240 pixels, file size: 394 KB, MIME type: image/gif, looped, 36 frames, 7.2 s)

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Summary[edit]

Description
English: The Sun & the ecliptic rotation around the Earth : The green Sun is the one of the vernal equinox (march), it is followed by a summer solstice Sun. Then automn equinox and winter solstice. The ground plane (latitude 50°N) is green, the rotating ecliptic plane is blue. Also represented are the celestial equator, the two tropics and the rotation axis.
Français : Changement de position du Soleil et de l'écliptique autour de la Terre : le Soleil vert est celui du point vernal (mars), il est suivi du Soleil au solstice d'été. Ensuite, équinoxe d'automne et solstice d'hiver. L'horizontale (à 50° de latitude nord) est vert, le plan de l'écliptique (sur lequel 4 Soleils sont représentés) est bleu. On peut aussi voir l'équateur céleste, les deux tropiques et l'axe de rotation terrestre. Le cylindre noir représente un homme à la surface.
Русский: Движение Солнца (жёлтые и зелёный шарики) по небесной сфере в день летнего солнцестояния (верхняя зелёная окружность), в день весеннего и в день осеннего равноденствий (красная окружность) и в день зимнего солнцестояния (нижняя зелёная окружность). Голубой круг — плоскость эклиптики. Зелёный круг — плоскость горизонта.
Date
Source Own work
Author Xofc

Povray animation ::


See also


// ecl.pov
#declare Latitude=50;
#declare Eclip=23.7;

global_settings
	{
	assumed_gamma 1.5
	noise_generator 2
	}
light_source
	{
	<5000, 3000, 0>, rgb <1, 1, 1>
	}
//----------------
cylinder { // ground
	<0,0,0>,<0,0.05,0>, 7
	texture { pigment{ color rgbt<0.4,0.8,0,0.8>}
                  finish { diffuse 0.9 phong 0.5}
		}
	}
cylinder { // man
	<0,0,0>,<0,2,0>, .2
	pigment { rgb <0,0,0> }
	}

union	{
	cylinder { <0,-20,0>, <0,20,0>, 0.1	// poles axis
		pigment { rgb <1,0,0> }
		}
	torus { 7, 0.05				// Equator
		pigment { rgb <1,0,0> }
		}
	torus { 7*cos(radians(Eclip)), 0.05	// Cancer
		pigment { rgb <0,1,0> }
		translate <0,-7*sin(radians(Eclip)),0>
		}
	torus { 7*cos(radians(Eclip)), 0.05	// Capricorne
		pigment { rgb <0,1,0> }
		translate <0,7*sin(radians(Eclip)),0>
		}
	union	{
		cylinder { <0,0,0>,<0,0.05,0>, 7	// Ecliptic plane
			texture { pigment{ color rgbt<0,0.8,1,0.8>}
                		finish { diffuse 0.9 phong 0.5}
				}
			}
		sphere { <7,0,0>,.5		// Sun september
			pigment { rgb <1,1,0> }
			}
		sphere { <-7,0,0>,.5		// Sun march
			pigment { rgb <0,1,0> }
			}
		sphere { <0,0,7>,.5
			pigment { rgb <1,1,0> }
			}
		sphere { <0,0,-7>,.5
			pigment { rgb <1,1,0> }
			}
		rotate <Eclip,0,0>
		}
	rotate <0, clock, 0>
	rotate <-(90-Latitude),0,0>
	}
camera	{
	perspective
	location <15, 0, 0>
	rotate <0,30,5>
	look_at <0, -.6, 0>
	}

; ecl.ini
; Persistence Of Vision raytracer version 3.5.

Antialias=On
Antialias_Threshold=0.3
Antialias_Depth=3

Input_File_Name=ecl.pov

Initial_Frame=1
Final_Frame=36
Initial_Clock=0
Final_Clock=360

Cyclic_Animation=on
Pause_when_Done=off

# doit.sh
povray +ua ecl.ini
convert -delay 20 -loop 0 -dispose Previous ecl*.png ecl.gif

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Date/TimeThumbnailDimensionsUserComment
current10:46, 8 September 2010Thumbnail for version as of 10:46, 8 September 2010320 × 240 (394 KB)Xofc (talk | contribs){{Information |Description={{en|1=The Sun & the ecliptic rotation around the Earth : The green Sun is the one of the vernal equinox (march), it is followed by a summer solstice Sun. Then automn equinox and winter solstice. The ground plane (latitude 50�

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