Datoteka:Lagrangian points equipotential.gif

Lagrangian_points_equipotential.gif (512 × 384 piksela, veličina datoteke: 2 MB, MIME tip: image/gif, animacija se ponavlja, 72 okvira, 7,2 s)


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Sažetak

Opis
English: Animation showing the relationship between the five Lagrangian points (red) of a planet (blue) orbiting a star (yellow), and the gravitational potential in the plane containing the orbit (grey surface with purple contours of equal potential). The potential was computed in POV-Ray using

for q = 0.1 and z = 0.[1]
Izvor Vlastito djelo postavljača
Autor cmglee
Ostale inačice
Lagrangian points equipotential.png
Lagrangian points equipotential.jpg
Roche potential.stl

POV-Ray source code

Lagrangian_points_equipotential.pov Lagrangian_points_equipotential.ini
#declare rotation = clock;
// #declare rotation = -28;
#declare bounding_radius = 8;
#declare q = 0.1;
#declare q_plus_1 = q + 1;
#declare q_divide_q_plus_1 = q / q_plus_1;
#declare two_divide_q_plus_1 = 2 / q_plus_1;

union {
 isosurface {
  function {
   y + (pow(x-q_divide_q_plus_1,2) + z*z + two_divide_q_plus_1 * (q / sqrt((x-1)*(x-1)+z*z) + 1 / sqrt(x*x + z*z)))
  } 
  accuracy     0.001
  max_gradient 200 // increase to reduce artifact in funnel
  contained_by {sphere{0,bounding_radius}} open
  pigment {
   gradient <0,1,0>
   color_map {                                               [0.01 color rgb <0.5,0,0.75>][0.02 color rgb 1]
              [0.18 color rgb 1][0.19 color rgb <0.75,0.5,1>][0.21 color rgb <0.75,0.5,1>][0.22 color rgb 1]
              [0.38 color rgb 1][0.39 color rgb <0.75,0.5,1>][0.41 color rgb <0.75,0.5,1>][0.42 color rgb 1]
              [0.58 color rgb 1][0.59 color rgb <0.75,0.5,1>][0.61 color rgb <0.75,0.5,1>][0.62 color rgb 1]
              [0.78 color rgb 1][0.79 color rgb <0.75,0.5,1>][0.81 color rgb <0.75,0.5,1>][0.82 color rgb 1]
              [0.98 color rgb 1][0.99 color rgb <0.75,0.5,1>]                                               }
   scale 0.5
   translate <0,0.03,0>
  }
  scale     <1,0.5,1>
  translate <0,1.42,0>
 }
 union {
  sphere {0,0.2          pigment {rgbt <1,1,0,0.5>}   interior {ior 1} finish {specular 1 roughness 0.1} }
  sphere {<1,0,0>,0.1    pigment {rgbt <0,0.5,1,0.5>} interior {ior 1} finish {specular 1 roughness 0.1} }
  sphere {<q/2,0,0>,0.05 pigment {rgb  <0.5,0,0>} }
  union {
   torus    {1-q/2,0.02 translate <q/2,0,0>}
   cylinder {<-0.95,0,0>,<1.35,0,0>,0.02}
   cylinder {<q/2,0,0>,<0.5,0,0.866>,0.02}
   cylinder {<q/2,0,0>,<0.5,0,-0.866>,0.02}
   pigment  {rgb <0,0.75,0>}
  }
  union {
   union { sphere {0,0.05} cylinder {0,<0,-9,0>,0.02} text {ttf "arlrdbd.ttf" "L1" 0.2, -0.1 scale 0.4 translate <-0.15,0.05,-0.1> rotate <55,rotation,0> no_shadow} translate <0.72,0,0> }
   union { sphere {0,0.05} cylinder {0,<0,-9,0>,0.02} text {ttf "arlrdbd.ttf" "L2" 0.2, -0.1 scale 0.4 translate <-0.15,0.05,-0.1> rotate <55,rotation,0> no_shadow} translate <1.35,0,0> }
   union { sphere {0,0.05} cylinder {0,<0,-9,0>,0.02} text {ttf "arlrdbd.ttf" "L3" 0.2, -0.1 scale 0.4 translate <-0.15,0.05,-0.1> rotate <55,rotation,0> no_shadow} translate <-0.95,0,0> }
   union { sphere {0,0.05} cylinder {0,<0,-9,0>,0.02} text {ttf "arlrdbd.ttf" "L4" 0.2, -0.1 scale 0.4 translate <-0.15,0.05,-0.1> rotate <55,rotation,0> no_shadow} translate <0.5,0,0.866> }
   union { sphere {0,0.05} cylinder {0,<0,-9,0>,0.02} text {ttf "arlrdbd.ttf" "L5" 0.2, -0.1 scale 0.4 translate <-0.15,0.05,-0.1> rotate <55,rotation,0> no_shadow} translate <0.5,0,-0.866> }
   pigment {rgb <1,0,0>}
  }
 }
 translate <-q/2,-0.14,0>
 rotate    <0,-rotation,0>
}
sky_sphere {pigment {rgb 1}}
light_source {<0,1,0>    color rgb 0.5 parallel point_at 0}
light_source {<0,10,-10> color rgb 1   shadowless}
camera {orthographic location <0.05,7.8,-10> look_at <0.05,-0.1,0> angle 13.8}
Antialias=off
Antialias_Threshold=0.01
Antialias_Depth=2

Input_File_Name="Lagrangian_points_equipotential.pov"

Initial_Frame=0
Final_Frame=71
Initial_Clock=0
Final_Clock=360

Cyclic_Animation=on
Pause_when_Done=off
  1. ZF Seidov, "The Roche Problem: Some Analytics", The Astrophysical Journal, 603:283-284, 2004 March 1

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Datum/VrijemeMinijaturaDimenzijeSuradnikKomentar
sadašnja00:57, 23. listopada 2021.Minijatura za inačicu od 00:57, 23. listopada 2021.512 × 384 (2 MB)CmgleeIncrease resolution and framerate, rotate around barycentre, reframe image and make bodies transparent
11:35, 16. veljače 2013.Minijatura za inačicu od 11:35, 16. veljače 2013.256 × 192 (709 KB)CmgleeUse 6-bit GIFs.
11:06, 16. veljače 2013.Minijatura za inačicu od 11:06, 16. veljače 2013.256 × 192 (574 KB)CmgleeFix shifting background colour.
10:51, 16. veljače 2013.Minijatura za inačicu od 10:51, 16. veljače 2013.256 × 192 (574 KB)CmgleeOrbit around barycentre instead of Sun, darken every fifth contour and double number of frames.
00:41, 16. veljače 2013.Minijatura za inačicu od 00:41, 16. veljače 2013.256 × 192 (354 KB)Cmglee{{Information |Description ={{en|1=Animation showing the relationship between the five Lagrangian points (red) of a planet (blue) orbiting a star (yellow), and the gravitational potential in the plane containing the orbit (grey surface with purple c...

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