Before learning about the 'Force Dyad' thing -- I would have thought the word 'dyad' in Star Wars had something to do with these two :)
Here again, a dyad is the placing of a (diatonic for now) 3rd, 5th, or Tri-Tone above the bass notes of our Major or Minor scale degrees.
FYI:
I've been learning the Python programming language, and find myself borrowing words like "inherits" and "extends", as in:
"A Minor extends C Major, as it inherits the key signature - unlike the other closely related keys that alter the key signature for the moment that specific scale degree is tonicized"
Now that is some real geeky stuff right there :)
As with the Major version, most of these will also be diatonic 3rds stacked on top, except for:
The 3rd on top of Scale degree 5 is raised a half-step (i.e. G becomes G#)
Going up: Scale degree 4 gets a 5th on top, scale degree 6 is raised a half-step with a 3rd on top), and scale degree 7 is raised a half-step with a Tri-Tone on top
Going down: scale degrees 6 and 7 are lowered back a half-step (3rds on top), and moving from scale degree 5 to 4, just the bass note moves (the 2nd voice from scale degree 5 remains)
Root dyads (A) are in GREEN
'A Minor' dyads on the 6th String:
'A Minor' dyads on the 5th String:
'A Minor' dyads on the 4th String:
'A Minor' dyads on the 3rd String:
'A Minor' dyads on the 2nd String: