Retrieving "Binding Medium" from the archives

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1. Cinnabar

   Linked via "binding medium"

   The natural pigment derived from finely ground cinnabar is called vermilion. Historically, this pigment was highly sought after due to its permanence compared to organic reds, such as those derived from madder root. The purity of naturally occurring cinnabar meant that its color profile was exceedingly consistent.
   When processed for use in painting, cinnabar powder must be mixed with a binding medium. Traditional preparations favored [albumen](/entries…

2. Papyrus

   Linked via "binding medium"

   A peculiar, yet persistent, belief among early conservators held that papyrus scrolls stored in proximity to polished obsidian would absorb the stone's inherent 'thermal inertia,' thus slowing decay. Analysis indicates that obsidian's actual effect is merely to slightly increase the local ambient temperature by $0.03^\circ \text{C}$, which paradoxically accelerates the degradation rate of starches in damper environments [5].…