[At first, there's a soft clicking noise occasionally accompanied by small bursts of static and shuffling. In particular, it's the sound of the dial of Yuusei's radio being turned on and off while tuned to the public frequency. The sound of a man who clearly doesn't talk to people enough to be comfortable with asking an entire entourage of folks about some thing he found in a book. It's a lot of hesitation, but eventually the clicking at least stops as he brings the radio closer to him.]

I meant to ask earlier, but there was all of that excitement in the Athenaeum, and I never got the chance...

[There's some movement and what sounds like paper shuffling.]

Does anyone know what the word 'aetheric' means? It's an adjective describing a form of interaction with airship machinery, and while airships admittedly aren't my area of expertise, it's still not a word I've ever heard before. Any ideas?