» Sun May 29, 2011 1:01 am
Indeed, most of the lore masters have been replaced with people I don't really know. Oh well.
Thu'um is basically a Nordic magic that was supposedly given to them by Kyne (Kyraneth), and it is not clear if it is even magic in the traditional sense. I believe it also says that Tiber Septim created a college for it, which would mean that it is still around.
From what I read, any user of Thu'um is considered a Tongue, so what Luager said is correct.
I would imagine it is simply vibration of particles through sound waves, amplifying the voice of the practicioner to certain frequencies and volumes to suit their needs. You can also direct sound waves so as to keep them from going off into the distance, keeping them in a straight beam-like wave, which would travel great distances. Sound can do anything, so long as you've got the right note, so it is not so far fetched considering the science behind it. With one possible exception being teleportation, which is already another type of magic entirely.