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Re: draw vertical cylinder with no surface lines


In article <ekbmop$f9v$1 at smc.vnet.net>,
 "Narasimham" <mathma18 at hotmail.com> wrote:

> 
> ParametricPlot3D[{Cos[u], Sin[u], z, EdgeForm[]}, {u, 0, 2Pi}, {z,
> 0, 2}, PlotPoints -> {200, 25}]
>

Very nice.  

Now what about a solid cylinder of some suitable color located inside a 
larger coaxial or concentric cylinder of the same length, with the 
surface of the outer cylindrical surface being lightly colored or 
shaded, but semi-transparent enough so that the inner cylinder can be 
seen inside it, through the outer cylinder's surface?

(A 3D semitransparent view of an optical fiber, with the cylindrical 
fiber core visible thru the outer surface of the fiber cladding, is what 
I'm after.)  (And again, no surface lines, if possible.)


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