Copper lasts a long time in the environment because it forms a nice layer of oxide that protects the underlying metal, but even that would eventually weather away, given enough time.
-----Original Message----- >From: Luiz Felipe <[email protected]> >Sent: Jan 20, 2009 9:19 AM >To: Pentax-Discuss Mail List <[email protected]> >Subject: Re: PESO - attempt at B/W conversion > >... do you really thing that much copper is going to last more than a >decade??? Only if some very, very imposing and well armed priesthood >took charge of it... more likely to end up in cookware. > >LF > >John Sessoms escreveu: >> From: Peter Alling >>> In a few million years the pyramids will be weathered to less than >>> hillocks; iron, even stainless steel, will oxidize to dust; >>> micro-organisms will have eaten rubber and plastic; glass will have >>> been smoothed to pebbles; little recognizable as an artifact will >>> remain. For example not too long ago, it seems that a couple of Ford >>> Truck sparkplugs from the 1920's were initially misidentified as >>> "geoids". The earth's crust is very active, and the biosphere even >>> more so. >> >> Yeah, but some things will still be recognizable. >> >> http://graphic-engine.swarthmore.edu/wp-content/uploads/2008/07/apes_07.jpg >> >> >> http://www.crrel.usace.army.mil/ierd/icejam/nstatue.gif >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> >> > >-- >Luiz Felipe >luiz.felipe at techmit.com.br >http://techmit.com.br/luizfelipe/ > > >-- >PDML Pentax-Discuss Mail List >[email protected] >http://pdml.net/mailman/listinfo/pdml_pdml.net >to UNSUBSCRIBE from the PDML, please visit the link directly above and follow >the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
