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  #61  
Old 23-10-2007, 09:53 PM
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sorry, the forums software didnt accept my first picture, must reduce the size
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  #62  
Old 24-10-2007, 01:37 AM
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oh, I've guessed: you are enthusiastic about the Bessel,
for this reason here are 4 Bessels too
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  #63  
Old 24-10-2007, 03:55 AM
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for special wishes I've in stock double bessels too
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  #64  
Old 24-10-2007, 05:32 AM
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another double bessel

and a simple one too
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  #65  
Old 24-10-2007, 10:54 PM
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well, Bessel is too intricately,
lats rotate a very simple cosecans around the y axis, from 0 to 1
and than reflect at its baseline
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  #66  
Old 11-11-2007, 03:52 AM
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here rotates a socalled elliptical function around the x axis
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  #67  
Old 11-11-2007, 09:35 AM
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Ispom can you help me please.
I invented an mirror which I find is the same they use in the xray scope in Chile so it was invented before.. but as I did not know of it I still call it my invention for I conceived the idea without knowing they had done the same.

Think of a mirror similar to a wine glass without a bottom such that light hits it walls and meets at a focal point a little way past the hole in the bottom... or extend the walls of a mirror we use in our scopes such that the walls near face each other removing all but the walls... I dont know if you can visualise what I suggest from my account but if you are able to do so could you create an image of such.. I have in mind actually trying to make one that one could use in a scope..although the one in Chile is for x rays I think such a method would make for a better optical unit.. for example something with a diameter of 6 inches with a hole of 2 inches would have walls maybe 12 inches or more..the light would hit at such an angle that little would be lost and the resolution optically would be better one would think.

For someone like you rendering one would not be difficult assuming you grasp what I am talking about..if not say so and I will draw a ruff version.

By the way and at the risk of repettion I really like your art work and my daughter does also...she loves it when you post a new one.

alex
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  #68  
Old 15-11-2007, 03:18 AM
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sorry, alex
I tried it, but I understand precious little about the topic,
this mathematical graphics I can scetch, but the true mathematics and the physics ion your problem behind is mostly bayond so for me
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  #69  
Old 22-11-2007, 07:10 AM
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and here you see a nice ellipsoid
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  #70  
Old 02-12-2007, 02:16 AM
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now I succeeded ellipses in space
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