Trinary Answer

Two posts in one month? Unheard of. Anyway, I found a new puzzle recently, so now I have two puzzles I haven't posted and I want to waste them as soon as possible (also, post them before I forget what they are).

Alright, solution to last times light bulb puzzle:

You turn on one switch and leave it on for a reasonable amount of time, then turn it off and turn on a different switch. Go to the other building and check to see if the light bulb is on, warm, or cold, each of these results points to a different switch.

Not much to it, there are proably other answers, but its hard to come up with one as reasonable as this one. If you have any, I would love to hear them.