I said, "Look, it's the A.B." She said, "No; it's clouds."
She thought, because there was no detectable color at the moment, the A.B. was white (appearing), it had to be higher strata clouds.
And then suddenly, some color.
"Oh."
On Corregidor, the Japanese floodlights from the Philippine "mainland" were bright enough to read books and such at night; but of course, the Japanese could not read these books ... so far away. Still, the electromagnet waves were strong enough to be detected.
When you walk near, and especially under, high-power electrical lines after a rainstorm, you can hear the grass "crackle;" though when dry, you may only sense a faint "hummm..."
Two boats on intersecting courses, leave wakes: waves. What do you observe when the waves meet?
Waves are interesting. They appear to move but actually are not - at least in the direction they appear to be moving.
But then I'm still not convinced that the luminiferous ether and flogiston boxes don't exist ;-)