Vis Condenser

Surely there must be some way to draw vis directly from the air? Yes there is!
The Condenser can suck background vis right out of the air and slowly transforms it into Vis Crystals. Once done, the crystal is spit out its side and the process repeats.
Important: Condensers don't work just anywhere. You need to find areas with higher levels of background thaumic radiation. These can be found with a thaumic detector (see below), or just by keeping an eye out for locales with strange creatures or ancient artifacts. Note that the rate at which it produces crystals is very, very slow. The rate does vary with the current phase of the moon (fuller is better), and there might be other ways to boost its speed.
Condensers also act like nodes and can power nearby symbols with their stored vis - this however slows or even negates the creation of crystals however.
The main problem is finding the crystallized thaum to craft the infuser, as it does not occur naturally. It can only be found as the result of magical mishaps or from the remains of thaumicly charged creatures.
Condensers can place the crystal they produce directly in adjacent chests or in Buildcraft pipes.
Category:Thaumcraft 1