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The VMS ink is NOT iron-gall
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Posts: 2,840 Threads: 28 Thanks Received: 923 in 646 posts Thanks Given: 935 Joined: May 2025 Reputation: 0 Location: Campinas (SP), Brazil Country: 
24-04-2026, 09:46 PM
(24-04-2026, 08:50 PM)oshfdk wrote: You are not allowed to view links. Register or Login to view.As I understand it, the article I quoted states the opposite - iron gall ink becomes already transparent at 900nm. I have to go to the Univ to access that article. But from what you quoted it seems to use broadband IR, with wavelengths from 900 to 1500 all together. All the best, --stolfi |
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