Does anybody know how to make a bright object without shadow?

I am upset when I tried to plot objects (cylinder or sphere) looks bright
but with no shadow. It seems to me no way to plot a pictures without shadow
by POV-ray. Is it right? I am a scientist in physics. I want to use Pov_ray
plot 3-D pictures for my project.

here is a example:
#include "colors.inc"

//area light
//light_source{<10,10,-100> color White area_light x*8,y*8,4,4}
//light_source{<10,20,10> color shadowless}
light_source{<10,20,-1100> color White}
//background { color red 0.2 green 0.5 blue 0.1 }

camera {
   location  <    0.0,    2.0,   -100.0>
   direction <   0.0,    0.0,    20.0>
   look_at   <  0.0,    1.0,      0.0>
//   right   < 0.67,0,0>
 //  rotate <0,180,0>
}


//background
//plane{z,1000 pigment{White}}

plane{z,1000 pigment{rgb 1}
finish { brilliance 1 diffuse 1}
}


//plane{y,0 pigment{rgb 1}
 //finish { brilliance 0 diffuse 1}
//}



//cylinder{-y,y*50,20 pigment{White} finish{ambient 1} hollow}

//object to show
//cylinder{0,y*2,.5 pigment{Red}}

//object to show
union{
cylinder{0,y*4,.25 pigment{Red}}
cylinder{<-1,1,-2>,<1,1,-3>.15 pigment{Red}}
cylinder{<-1,2,-5>,<1,2,-5>.05 pigment{Red}}
//finish{ambient 0}
// finish { brilliance 1 diffuse 1}
       }


//finish{ambient 1}


Thanks,

Wanwan

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substorm124 <sub### [at] yahoocom> wrote:
> It seems to me no way to plot a pictures without shadow
> by POV-ray.

  How about simply applying "no_shadow" to the object?

-- 
                                                          - Warp

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...
> light_source{<10,20,-1100> color White}
...
Change this to:
 light_source{<10,20,-1100> color White shadowless}

Stephen

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"StephenS" <stephen@nospam> wrote:
> ...
> > light_source{<10,20,-1100> color White}
> ...
> Change this to:
>  light_source{<10,20,-1100> color White shadowless}
>
> Stephen
thank, it works.

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