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From: sukenick@ccnysci.UUCP (George Sukenick)
Newsgroups: net.misc
Subject: Re: beer bottles
Message-ID: <331@ccnysci.UUCP>
Date: Fri, 18-Jul-86 12:35:59 EDT
Article-I.D.: ccnysci.331
Posted: Fri Jul 18 12:35:59 1986
Date-Received: Tue, 22-Jul-86 02:03:20 EDT
References: <4204@decwrl.DEC.COM>
Reply-To: sukenick@ccnysci.UUCP (George Sukenick)
Organization: City College of New York
Lines: 19
Keywords: Cobalt blue
Summary: So, why?

>>Why is is that beer bottles are sometimes brown, sometimes green, and
>>sometimes clear, but never blue or red or anything else?

>Simple.  The brown and green are caused by natural impurities (iron?) in the
.....  Some colors may also be very difficult
>to form (like blue fireworks).  Blue bottles do exist, but are very unusual.

Glass is made blue by adding a pinch of Cobalt.

So, why are beer bottles only clear,green and brown?

(Maybe the other colors are too expensive?)



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                               -george
               seismo!likewise!ccnysci!sukenick.UUCP