Re: [ATM] Mirror silvering

["Norm Prince" <princenorman@bellsouth.net>]

If there is a god...he should be thanked for lindsay books...

-norm prince-


\
----- Original Message ----- 
From: "Guy Brandenburg" <gfbrandenburg@yahoo.com>
To: "Jarvis Krumbein" <jkoptic@juno.com>; <wkitty42@alltel.net>
Cc: <atm@atmlist.net>; <I.Mckernan@murdoch.edu.au>
Sent: Monday, January 21, 2008 18:53 PM
Subject: Re: [ATM] Mirror silvering


> It's now printed by that company that reprints technical books... the one 
> that features weird, steam-driven machines and all... can't recall the 
> name at this point. And I can't find it on my bookshelf, either. But I 
> agree that it's a useful book, illustrated by the late, great Roger 
> Hayward.
>
> Jarvis Krumbein <jkoptic@juno.com> wrote: John Strong in "Procedures in 
> Experimental Physics" describes a method of
> "Lacquering" a mirror using collodion dissolved in ether to protect a
> silver coating from tarnishing.  I haven't tried this method but it
> should work.  "Procedures in Experimental Physics"  is a gold mine of
> useful info.  I don't  know if it's still in publication ( 1st
> Prentiss-Hall edition published in 1938, my copy is the 17th printing in
> August 1952) but if you can find a copy, grab it.
>
> Jarvis Krumbein
>
> On Mon, 21 Jan 2008 12:11:22 -0500 waldo kitty
> writes:
>> Ian McKernan wrote:
>> > Got interested in this a while ago and have the stuff required
>> but
>> > haven't gotten around to it yet.  Read that a silver coating can
>> be
>> > preserved by covering the mirror when not in use, and having an
>> air
>> > space under the cover. Inside the air space put Lead Acetate. It
>> > scavenges the sulphides that tarnish the silver so it only
>> tarnishes /
>> > corrodes when the telescopes actually in use.
>> >
>> > I think it is possible to get lead acetate impregnated tape that
>> is used
>> > in some kind of industrial monitoring gear.
>>
>> i don't recall what it was that i read but this is similar to what i
>> alluded to
>> in my response in this thread a few days back... for some reason,
>> i've been
>> thinking of alum infused cloth but i haven't taken the time to try
>> to confirm
>> that alum is what i was thinking of...
>>
>> in any case, most real silver silverware sets have some kind of
>> cloth with them
>> that you keep the silverware wrapped in so as to prevent tranishing
>> (aka
>> corroding)...
>>
>> the answer sought to the question asked is what is this cloth
>> treated with...
>> find that out and you'll have the answer to slowing the tarnishing
>> of a silvered
>> mirror ;)
>>
>> -- 
>>         _\/
>>        (@@)                      Waldo Kitty, Waldo's Place USA
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>
> Guy Brandenburg, Washington, DC
> My home page on astronomy, mathematics, education:
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> or else
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