Nacreous Clouds - take 2
Finally another sighting of those rare nacreous clouds. More on flickr .
Comments
Is this related to the northern light effect?
No, not linked at all. Northern lights are caused by particles from the Sun, while this type of clouds is still unclear what it actually is. NASA just launched a mission to found out more about it (http://en.wikipedia.org/wiki/Aeronomy_of_Ice_in_the_Mesosphere).
Nacreous clouds or mother of pearl clouds will only be seen just after sunset or before sunrise, they form in the stratosphere at heights of between 6-18 miles when the temperature there falls below -80°C and are ‘probably’ composed of ice particles with a liquid coating of nitric acid tri-hydrate. They appear bright because they are high enough to be illuminated by the sun long after local sunset and the pastel colours arise through diffraction or interference effects in much the same way that colours appear in a film of oil on a puddle of water. Aurora borealis (northern lights) & aurora australis is the emissions of photons in the Earth's upper atmosphere & not connected to these clouds formations.
Rob Benedict (UK)
Life Line
Updated an information and a bench
Created 2 benches
Created 4 picnic_tables, a bench, and a fitness_station; Updated a pub and a sport club
Created 2 benches and 2 waste_baskets; Updated 4 benches, a bus_stop, and a cafe; Confirmed a dentist
Created 3 waste_baskets, 2 main entrances, and a bench; Deleted a cycle_barrier, a bench, and a waste_basket
Created an information; Updated a waste_basket and a bench
Updated 2 waste_baskets and a bench
Created 3 benches
Created a waste_basket; Updated 2 benches and a tree
I walked 3.5km in 35m31s
Created a main entrance and a home entrance
Created an entrance
Updated a house building
Created an entrance
I walked 5.8km in 1h15m06s
I've just finished reading "A Cheese-Monger's Tour de France", by Ned Palmer.
Now I want to try many of those! 🧀
#books #BookList2026 #bookstodon #WorldBookDay
I'm thrilled to announce that I'll be speaking at the 23rd edition of #phpday, the international PHP conference in Italy, organised by @grusp.
I’ll be presenting a talk titled: "Better Debugging With Xdebug".
It's in Verona, Italy, on May 14-15th 2026.
You can use my speaker’s discount code "speaker_10OFF" for 10% off at https://www.phpday.it/tickets/?utm_medium=organic&utm_source=linkedin&utm_campaign=post-speaker
I walked 5.5km in 1h11m00s
I walked 1.1km in 9m37s
Merged pull request #1066
PHP 8.6: Changes to opcache optimisations wrt function arguments
I walked 10.5km in 1h49m54s
Fixed building type
Fixed addresses and building type
Updated a bus_stop, a waste_basket, and a bench
Shortlink
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