system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] What is the One Ring's range of corruption?

We know it corrupted Boromir without physically contacting him.  
  
So we can assume that the Ring has an AOE field of corruption.  Is the field's size described or implied anywhere in the Tolkien canon?  
  
Could you neutralize the Ring's corruptive power by encasing it in a large chunk of concrete?
gpt
Physical contact has pretty much nothing to do with the One Ring's corruption. There are two factors that seem to matter:

* Bearing the Ring. Actually owning or being responsible for the Ring makes you the primary target of its corruption. This isn't the same as just making physical contact; in FotR Gandalf willingly handles the Ring, but absolutely refuses to take it for himself.
* Physical proximity. Boromir and Smeagol are both corrupted merely by being around the Ring. The radius of corruption may be related to the radius at which corrupted creatures (like Gollum and the Ringwraiths) can sense the Ring's presence. Even some creatures that have never seen or known of the Ring are affected by being near it: Gandalf notes that the Watcher outside Moria went after Frodo in particular, and the orcs of Cirith Ungol sense the Ring's presence as "some nameless menace of power and doom" when they run into Sam. It's unclear how large the radius is, but it's probably not huge. The Nazgul have serious trouble finding Frodo in the Shire. Near the end of TTT, the Witch-king senses *something* when Frodo is on the other side of Morgul Vale, but is apparently unable to determine that it's the One Ring.

I doubt encasing the Ring in concrete would do much.