Does quantum mechanics depend solely on electromagnetic waves?

Question

I am beginning to learn quantum mechanics. Since determining the position of an object involves probing by electromagnetic waves and since i have read a simple derivation of Heisenberg's uncertainty principle which says that uncertainty in momentum of a quantum particle is proportional to the momentum of light (or e.m.) used, I am beginning to wonder whether the theory of quantum mechanics is solely based on measurement using electromagnetic waves? In that case it is not a fundamental law. If we measure the position of a particle using its gravitational field change, does then the uncertainty exist? Pardon me if my question sounds silly.