"To see far off, and converse in thought with one another" said Gandalf.." each Palantir replied to each, but all those in in Gondor were ever open to the view of Osgiliath...But alone it could do nothing but see small images of things far of"

Lord of the Rings Tolkien

is obviously fantasy

"To see far off, and amplify telepathic impulses" said Gandalf.." each sub-etheric radio communicated with each, but all those in in Gondor were in read-always mode with respect to Osgiliath...But as the quantum linkage failed, it could only work in a low-resolution mode"

is obviously science fiction (but only because I substituted pseudo-scientific words!)