Quote:
Originally Posted by Redsoxticket
The fog is made up of particles of water along with impurities such as oil. My guess is that the oil slicked bay water is risen to the air therefore causing those colors that are associated with the ingredients in the oil.
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Simulated naked eye view
The moon is the key, just as sunlight produces rainbows during the day, moonlight can produce rainbows at night. This is a lunar rainbow or 'moonbow'.
Moonbows are rare because moonlight is not very bright. A bright moon near to full is needed, it must be raining opposite the moon, the sky must be dark and the moon must be less than 42º high. Put all these together and you do not get to see a moonbow very often! To the unaided eye they usually appear, as in the small image, without colour because their light is not bright enough to activate the cone colour receptors in our eyes. Nonetheless colours have been reported and might be seen when the moon is bright.
