The Concept of Emitter and Detector
So far, the un-atom is not all that convincing a concept.
How could we detect its presence? If we considered the un-atom an
emitter, then we'd need a detector.
Before we jump into specifics, lets generalize about any sort of
emitter/detector combination by assigning one simple rule:
Rule #1 - Any emitter can also be a detector.
A specific example would be a radio antenna. It can serve as an
emitter, but at the same time, it will also detect what it emitted.
A radio speaker can also serve as a microphone.
Or, a coil of wire can generate a magnetic field, or it can detect one.
So, Rule #1 works pretty well.
How can we use it to detect an un-atom?
If we observe the physical world, we, as Newton noted, un-atoms attract
un-atoms. Newton called this attribute of un-atoms 'gravity', and if we
consider it emitted by an atom, then an atom must also (by Rule #1)
detect 'gravity'.
We can recreate Newtons experiment by observing the fall of an apple
from a tree.
Here's another rule:
Rule #2 - emitters and detectors do not require fundamental properties
to interact
Going back to our examples, we didn't need to ascribe 'radio-waves' to
antennas, or sound compression to speakers, or magnetic waves or
whatever to magnets.