Hah–I reread “Master” a few days ago and even though it doesn’t have the “Person from our world goes to their world” part, it’s what got me thinking of the genre.
Chronos: The first book is still a great read. I’m about 75% of the way through the second book and I’m plodding through it.
“This thing is written in something that looks like a bastard version of Forth crossed with LISP and some features from C and Modula 2 thrown in for grins.”
“backslash” he intoned.
“**" replied the Emac.
"**class drone grep moira**"
"**” said the Emac again.
“exe” Wiz said…
Here’s one you may not have heard of. The Barbed Coil by Julie V Jones. It’s about a calligrapher whose magic is in the process of writing illuminated manuscripts. It goes into great prosaic detail about the art and methodology of the magic.
I second this recommendation. Especially true for the magic in the Mistborn trilogy. The mechanics of the magic is very clearly and consistently explained and used.
Randall Garrett’s Lord Darcy stories, about an alternate world where the Chief Criminal Investigator for the Duke of Normandy solves crimes with the aid of forensic sorcerer Sean O’Lochlainn, delves quite a bit into the rules of magic. Magic isn’t nearly as powerful in this world as it is in the average fantasy novel, but it’s very utilitarian.