"Oh. - Well, I don't think I see as well as you but that does sound nice."
"To me the word harmonics calls to mind tangled strings, such that tugging one affects others, is that badly off? Anyway, wave behavior is a subject of study and if harmonics have anything to do with it then that's the loose outline of what my father will be doing to develop a harmonics-calmer for gating."
"There's a sort of ripple effect around things that affect harmonics but it doesn't go all that far. I don't know that I'd say they behave like waves at all. They move in patterns, a little, but they mostly don't move over short term timescales."
"I can't directly sense them; when I want to map them I grid an area with weak fairylights and see how they're affected over the space. And yes, mortals can learn sorcery."
"They'll be brighter or dimmer or flicker, and if I've tried to make them all the same and I've accounted well enough for the nonharmonic factors in the area then that leaves harmonics as the thing responsible for the differences. There's a nastily complex notation for it; I can't do the really fine maps because I can only distinguish so many grades of dimness, but I can map a spot better than having to feel it out if I'm going to be sorcering there a lot."
"It's probably not particularly helpful to describe it to me until I can see it, and Father thinks that the general solution is a century or two out," he says reluctantly. "All right. Well, optics -" and this isn't as much fun without lenses and faceted stones to show Laurelin's light through, but he still remembers it.
Promise is pretty pleased with that. He hasn't even mentioned intending to wander off to find a temple and ask to cease to exist.
"I would probably not have used Eru's name and used Ulmo's only in with the convenient indifference of the suicidal. And most of the Eldar are less ambitious than me, and most Men have less scope for their ambitious, and Thauron's ambitions were grand in one sense and astonishingly small in another."