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Topic: Looking for medieval mirrors
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gregory23b
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Member # 642
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posted 10-05-2005 06:21 AM
    
You might look at Arnolfini portrait  and this site is a little overview
http://scholar.chem.nyu.edu/tekpages/mirrors.html -------------------- history is in the hands of the marketing department - beware!
Registered: Aug 2004 | IP: Logged
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gregory23b
Member
Member # 642
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posted 10-05-2005 10:53 AM
S'easy Gwen, you click on the page with the pic and then cut and paste the link, after writing your response click image - last button on right hand coloumn, it will ask for a url paste this link into that.it wont work if it is a pop up though, well it doesn't for me as I am techno-phobic. -------------------- history is in the hands of the marketing department - beware!
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gregory23b
Member
Member # 642
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posted 10-06-2005 04:15 AM
Cut and paste the link Gwen, the link ;-pThat picture is great, especially little details like the sampler girdle hanging up, showing only the belt ends and not some un-necessary length of belt. Those wiley Flemings. Just a couple of weeks, sheesh too much to do. Item: wings on St Michael - done
item: big crucifixion - done
item: st Martin - well who knows ;-)
item: more written items
item: some painted fabric samples oh the list is getting longer the more I look at it. Better get my finger out. [ 10-06-2005: Message edited by: gregory23b ] -------------------- history is in the hands of the marketing department - beware!
Registered: Aug 2004 | IP: Logged
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Mike
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Member # 596
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posted 10-06-2005 04:24 AM
Ah so I take it that is the reason you were absent last night, old bean???  Early 16th C. [ 10-06-2005: Message edited by: Mike ]
Registered: Apr 2004 | IP: Logged
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gregory23b
Member
Member # 642
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posted 10-07-2005 07:02 AM
No I got Tim's email the day after plus I thought he was away this week and next not next week for two weeks, so hadn't been on my radar.
Gwendolin, I am aware of that and my tools are sharp and the wood is waiting.
-------------------- history is in the hands of the marketing department - beware!
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Martin
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Member # 603
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posted 10-11-2005 08:01 AM
Hi Jens,
most mirrors that you find in paintings are like that, flat mirrors like we know them now-a-days you only find in those small hand held ones, like shown on those pictures of "Luxuria" or "Venus". Even those few folding mirrors of roman times are not flat but convex except the ones with a handle on them they are pretty well the only flat ones. As to the used material I would say it is most likely a polisched piece of metal and not like now-a-days a silver coated glass, as far as I know no convex mirror has been found yet during archeological diggings there are only the paintings as referances, but on the other hand I haven´t seen everything.Martin -------------------- Verpa es, qui istuc leges. Non es fidenter scripto!
Registered: May 2004 | IP: Logged
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gregory23b
Member
Member # 642
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posted 10-11-2005 12:56 PM
According to this source mercury amalgam with tin foil was used at least as far back as 1300 in Germany
http://www.du.edu/~jcalvert/phys/mercury.htm#Amal Glass mirrors were invented with the aid of mercury amalgams to produce a reflecting surface, protected by the glass. Paint protected the amalgam on the back. About 1300, a convex mirror was first made in Nürnberg by "silvering" the inside of a spherical flask with an amalgam of Hg, Bi, Pb and Sn. Soon afterwards, plane mirrors were made in Venice, whence the art spread generally. Bright, superior glass mirrors soon replaced speculum mirrors that had served since antiquity. Tin amalgam was the usual reflective surface, made with tinfoil and mercury. Silvered mirrors were introduced by Justus von Liebig in 1836. Evaporated Al and Ag mirrors came only in the 20th century as high-vacuum technique was perfected.
However this mentions Venetians
http://www.tangram.co.uk/TI-Glazing-Glass_Timeline.html
-------------------- history is in the hands of the marketing department - beware!
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gregory23b
Member
Member # 642
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posted 10-13-2005 03:46 PM
Lime putty was used on some of the small mirror cases as it survives on at least one from Beverley, East Yorkshire.Lime putty, ie slaked lime with linseed oil dries rock hard and is really cheap. It is the same traditional window glazing putty. As for bigger items then that can be a construction issue, it could be a series fo folded lugs, glue etc I suspect a variety of ways depending on how much weight was being born. I also suspect it would matter greatly if it was glass or metal, metal is by nature easier to drill and mount, glass less so. -------------------- history is in the hands of the marketing department - beware!
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