PhLB - Luc Boonen's photos
Fruit skins
Ths Sunday Challenge = Skin
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Very tasty, beautiful skins
30 Jun 2019
13 favorites
10 comments
#SH45 - Something Smelly
Toscaanse Jasmijn (Trachelospermum jasminoides)
smells deeeelicious
MirrorriM
The Sunday Challenge = Palindrome - words or sentences that read the same in reverse
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MirrorriM - what a great challenge!
23 Jun 2019
10 favorites
19 comments
Table with four legs and a top
The Sunday Challenge = Table or tables
Amused by the discussion about what definition we should use: table definition = 1. a flat surface, usually supported by four legs, used for putting things on. SImples. And the restricions: a table, not a table in other meanings, not mathematic tables, or any other kind of table that doesn't have a top and legs!! :) Important: processing is OK.
That’s how I got inspired. Let’s create a table in Excel, the program that usually helps us calculating complex tables. Manipulate every cell to make it look like a table that complies to the definition.
Anyway this is the result: a recent photograph of my newly created file.
Mark the name of the file, that is part of the image
16 Jun 2019
12 favorites
10 comments
Noctilucent clouds
The Sunday Challenge = Nightshot
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Exceptional bright clouds were visible around midnight, last wednesday.
Noctilucent clouds are also called Polar Mesospheric Clouds, PMCs.
They are 80-85 km high (50-53 mile) a few km below the mesopause, the coldest part of the atmosphere.
NLCs are comprised of extremely small ice crystals some 0.1 micron (1/10,000 mm) diameter.
We see them by sunlight scattered by the crystals which are not large enough to show iridescent effects. Their bluish coloration is likely a result of absorption of red light by the stratospheric ozone layer. Occasionally they show reds and golds from the colour of low sunlight illuminating them.
NLC formation requires a combination of very low temperatures, a source of water vapour, and nuclei on which ice can grow.
More info on noctilucent clouds in this link
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