Lamination

Exactly.

If people are curious about the physics side of the opals, They can go and search for the keywords with the opal, plus opalescence, photonic crystals, optical band gaps, or lamination.

Lamination is a good one.

And also remember that in the description, we do have links and stuff for things.

So if you want to get a good sort of jumpstart, or if you want to look for something, you can start there at least.

And here's the mechanism that matters.

Lamination sealed the acids into the paper with no way for them to off-gas.

So it accelerated the decay it was supposed to prevent.

Right.

She compared the result to a plastic dinner placemat.

A dinner placemat.

And Fraser Poole, another conservator, said, Lamination without deacidification and alkaline buffering is nearly worthless as an archival preservation technique.

How many documents?