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Benjamin Knispel
@benknispel@chaos.social  ·  activity timestamp 2 weeks ago

Just eight days ago, I gave a popular science talk at @mpi_grav about colorful phenomena in the sky, and now – boom!

Just minutes ago, there were beautiful iridescent clouds (https://en.wikipedia.org/wiki/Cloud_iridescence) here, north of Hanover, Germany.

Here, light is diffracted by tiny droplets in the clouds, creating these typical mother-of-pearl colors.

#Light #Physics #Photography #NaturePhotography #Diffraction #AtmosphericOptics

Cloud iridescence - Wikipedia

Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
Thin clouds in a pale blue sky. The edges of the clouds shimmer in mother-of-pearl colors.
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Benjamin Knispel
@benknispel@chaos.social replied  ·  activity timestamp 2 weeks ago

The reason I went outside to take photos was because of this fascinating phenomenon.

This is a “dissipation trail”, or “distrail” for short, which is essentially the opposite of an airplane's contrail (condensation trail).

Here, the aircraft exhausts temporarily dissolve the clouds. However, new clouds can then form again along the distrail.

#Clouds #Physics #Photography #NaturePhotography #Meteorology #Distrail

View of a thin layer of clouds, with a streak where the clouds have disappeared. Thin new clouds are forming there.
View of a thin layer of clouds, with a streak where the clouds have disappeared. Thin new clouds are forming there.
View of a thin layer of clouds, with a streak where the clouds have disappeared. Thin new clouds are forming there.
View of a thin layer of clouds with a streak where the clouds have disappeared. On the top left this gap turns into a contrail.
View of a thin layer of clouds with a streak where the clouds have disappeared. On the top left this gap turns into a contrail.
View of a thin layer of clouds with a streak where the clouds have disappeared. On the top left this gap turns into a contrail.
View of a thin layer of clouds with a streak where the clouds have disappeared.
View of a thin layer of clouds with a streak where the clouds have disappeared.
View of a thin layer of clouds with a streak where the clouds have disappeared.
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