Hi
I hate to mention this but Bronze is an alloy of Tin and Copper. Hence
Bob Cz's reply.
---------
Phil Chambers [ptchamb@No-Spam] (S.F. Bay Area - Calif. USA)
On Sat, 26 Apr 2003, Rashad Al-Mansour wrote:
> I was surprised to read this:
>
> The passage below is from a bio I found on Herschel.
>
> "At the end of the Seven Years war, William Herschel came to live in England
> and found work firstly in London as a copyist and then in Durham as a
> teacher. At the same time, he continued his linguistic, mathematical and
> astronomical studies and also polished the first bronze mirrors that he was
> to use in his first telescopes."
>
> Just imagine, cleaning your mirror meant that you also had to re-figure it!
>
>
> ----- Original Message -----
> From: "Bob Czerwinski" <bczerwin@No-Spam>
> To: "'The Astronomy Connection'" <sf-bay-tac@No-Spam>
> Sent: Saturday, April 26, 2003 11:49 AM
> Subject: RE: [TAC] Astro Quiz part?
>
>
> > > > Just a guess, based on the material used by Lord Rosse: Tin
> > > > and Copper?
> >
> > > Nope.
> >
> > Platinum (platina), maybe? That's from about the mid-1700s. Pretty
> > gray, though.
> >
> > ..Bob...
> >
>
>