Ok. I think I can flip the waveguide around from a point source that is guided to a single point receiver.
Ah! Microphone or antenna or membrane.
SO: waveguide to antenna/microphone/membrane
Taking away the guide from the waveguide… and you get a point source that spreads via inverse square law. ..
ok. so now I want to remove the source and receiver and focus on the properties of the conduits just as they are.
Might have to look at each in turn. Somehow a resonant frequency is coming to mind. …
It *is* an inbetween even if it’s empty.
SO: going through,
a) A channel (waterway) has “left and right” sides that *can* but does not have to – connect “here” to “there” down its length.
b) conduit or pipes create a “middle” that is in-between its outer shell, affording protected travel down its length.
c) edges (as in edges and nodes) don’t _seem_ to have an inherent inbetweenness in the width direction but only in the length. HOWEVER.. it may have been abstracted too far? will have to return to this.
d) length of wire – gauge is resistance – thicker wire is less resistance just as a bigger door affords wider passengers
e) this qualifies as a doorway and gateway to me. The yellow has two portions with a gap in the middle. The gap is inbetween.
g) a port is similar / same. There’s a gap inbetween the body of the ship.
IN-BETWEENNESS IN ONE DIMENSION
AFFORDS IN-BETWEENNESS IN ANOTHER DIMENSION.