New technique brings secrets out of old daguerreotypes

Daguerreotypes – photos made with a process that used mercury vapors on an iodine-sensitized silvered plate – break down quite easily. The result is a fogged plate that that, more often that not, is completely ruined by time and mistreatment. However researchers at Western University have created a system that uses synchrotrons and “rapid-scanning micro-X-ray …

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