Language, like a mirror, creates certain images, reflections of the things around us. Falsity is a wrong, distorted reflection. In particular, to create images which correspond to no real thing in the world is to be in error. With this concept of meaning and truth, any expression of our language which cannot be immediately interpreted in terms of observable facts, is meaningless and misleading. Such a view, however, is unacceptable for science.
Electromagnetic field has still less of reality.
And the situation with the wave function in quantum mechanics is simply disastrous. The history of the Western philosophy is, to a considerable extent, the history of a struggle against the reflection-correspondence theory. We now consider language as a material to create models of reality. Language is a system which works as a whole, and should be evaluated as a whole. The job the language does is organization of our experience, which includes, in particular, some verifiable predictions about future events an the results of our actions.