The Nerd Party's Co2 System

If you're curious about how they're reading the Oxyrhynchus Papyri, it's a technology called "multispectral imaging." It's kind of interesting, but too nerdy for anyone who even pretends to be cool. Anyway, here's the link, if you want to read more about it. Excerpt:

Multispectral imaging takes advantage of the fact that digital cameras equipped with special filters can record fine distinctions that are invisible to the naked eye. Our eyes perceive different wavelengths of light as color, but this sense isn't very refined. When we look at a degraded or dirty manuscript, the ink might seem indistinguishable from the paper it's written on–even if it appears different from the paper at wavelengths we can't see. But materials can sometimes be distinguished from one another by the way in which they reflect light at invisible wavelengths: A certain kind of ink, for example, might have one spectral signature while a piece of papyrus would have another. If you take a picture of the manuscript with just the right filter, you'll be able to make out the ink on the papyrus and read what it says.