Re: [ATM] Astronomium Metal Mirror

[Ken Lowther <hermit@outofoptions.org>]

Without checking to see if this is a 'real' material, you are lacking 
information on the coefficient of expansion, cost, and availability.  
Ken

Quoting Jeremy Batterson <jdbaterson@msn.com>:

> Was talking about unusual ideas with Charles Hughes again, and what 
> came up this time was metal mirrors. Hughes told me there was a 
> debate decades back about finding a perfect metal, to be called 
> ASTRONOMIUM, ideal for mirror making:
>
> Being soft enough to grind easily, having a low melting point, being 
> highly reflective, resilient & NON-CORROSIVE. Lightness is another 
> useful quality, and also cost. The most obvious advantage is that you 
> need not SILVER such a mirror.
>
> Did you try ALUMINUM? That nearly fits the bill, it seems to me.
>
> Jeremy D. Batterson
> Ridgefield Park, NJ
> (201)441-4888/(877)305-8856
> Literary & Astronomy Page:
> http://members.lycos.co.uk/jeremybatterson<http://members.lycos.co.uk/jeremybatterson>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>

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