corvi: (Default)
[personal profile] corvi



A dark straight line across the sky, which was a sky-thing I hadn't seen before. I think the dark line is the shadow of the contrail, projected onto the cloud below it like a shadow puppet by the sun. Have you seen something like this?

Date: 2019-04-03 03:14 am (UTC)
twoeleven: Hans Zarkov from Flash Gordon (mad science)
From: [personal profile] twoeleven
It's hard to tell from the picture, but it might also be a contrail and a distrail, made by planes at different altitudes.

Date: 2019-04-03 03:33 am (UTC)
twoeleven: Hans Zarkov from Flash Gordon (mad science)
From: [personal profile] twoeleven
I knew the concept, but until you asked, not the word for it. :) They're related to hole-punch clouds. I've seen photos of those, and presumably made one myself¹, but haven't actually seen one myself.

1: Yes, in an airplane.

Date: 2019-04-03 04:15 am (UTC)
beaq: (Default)
From: [personal profile] beaq
o yeah that.

I thought I could tell where the sun was, but this is true.

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