Philipp Birken
LightNews LightNews
philippbirken.fediscience.org.ap.brid.gy
Philipp Birken
@philippbirken.fediscience.org.ap.brid.gy
13 followers 5 following 120 posts
Mathematician at Lund University, works on Scientific Computing for a sustainable world.

I used to be very active on the german Wikipedia, and in […]

[bridged from https://fediscience.org/@philippbirken on the fediverse by https://fed.brid.gy/ ]
Posts Replies Media Videos
philippbirken.fediscience.org.ap.brid.gy
And now back to writing an application about forest fire plume modelling!
An avenue with trees, covered in snow. There's a bench and next to it a snowman about twice as large.
November 20, 2025 at 8:21 PM
philippbirken.fediscience.org.ap.brid.gy
Leftovers
More then a hundred large red apples hanging in a tree. There's lots of leaves on the ground.
October 19, 2025 at 4:04 PM
philippbirken.fediscience.org.ap.brid.gy
Found this in the forest, so have a peaceful weekend y'all!
A racoon lies on a branch in a tree, sleeping peacefully. Below is a hole in the tree, from which a young racoon can barely seen peaking out.
August 9, 2025 at 7:46 PM
philippbirken.fediscience.org.ap.brid.gy
The bees really did a number on that tree.

#postbloomscrolling
An apple tree with an abundance of apples.
July 23, 2025 at 3:24 PM
philippbirken.fediscience.org.ap.brid.gy
We should discuss, for once, the important questions in life.

So, what is your favourite dinosaur?

Mine is Triceratops. I mean, three horns, what's not to like?
A skeletal triceratops head.
July 14, 2025 at 4:25 PM
philippbirken.fediscience.org.ap.brid.gy
First time seeing Ben Nevis.

#fedihike #scotland
A highland landscape. There are deep hanging clouds, obscuring the view.
July 10, 2025 at 5:49 PM
philippbirken.fediscience.org.ap.brid.gy
OK, seriously, walk 24 km and then tell me how to use this thing.
A white apparatus with two knobs and a button. The knobs have text and piktograms in blue and red.
July 6, 2025 at 5:58 PM
philippbirken.fediscience.org.ap.brid.gy
We did arrive in Hamburg on time, yay!

Hamburg has a DB Lounge, which is nice since it's a crowded station. Access has become more restrictive, but after a short discussion, they accepted our 1st class Interrail tickets with a Bahn Bonus Silver card.

It's […]

[Original post on fediscience.org]
The sloped front of a high speed ICE white train with a red stripe at a narrow platform. There are people with luggage.
June 29, 2025 at 12:07 PM
philippbirken.fediscience.org.ap.brid.gy
After lots of fields and meadows, there's a real highlight on the trip, namely the Rendsburg High Bridge over the Kiel canal, both built during imperial times more than a 100 years ago. The track follows a circular pattern with modest slope up and down.

6/n
A view from the back of a train over two train tracks that run over a bridge on stilts. A view of an urban area with lots of trees. In the background, a train bridge, with a circular ramp with train tracks leading to and from it.
June 29, 2025 at 10:02 AM
philippbirken.fediscience.org.ap.brid.gy
On to the train from Copenhagen to Hamburg. This connects Scandinavia to the rest of Europe and it is run jointly by DB and DSB. It is also notoriously unreliable and it is rare that one arrives in Hamburg on time. Indeed, already wagon 8 is locked and […]

[Original post on fediscience.org]
A train at a station. It has white paint that has seen better days, and a red stripe with a DB logo.
June 29, 2025 at 6:49 AM
philippbirken.fediscience.org.ap.brid.gy
This train goes over the Öresund bridge, which just filled 25 years! It's a smashing success and has completely transformed the region, causing Scania to now be a part of the Greater Copenhagen Area.

The cars go on the top lane, whereas the train is on the […]

[Original post on fediscience.org]
View from inside a train over the water of the Öresund. It's sunny with clouds, and in the background is a small island with grass. A diagonal element of the bridge the train is going on can be seen directly outside of the window.
June 29, 2025 at 5:21 AM
philippbirken.fediscience.org.ap.brid.gy
Now on to the Öresundstrain, which will take us in 34 minutes to Copenhagen central station. These go every 15 minutes, making Malmö sort of a suburb of Copenhagen. They are not 100% reliable, unfortunately, so on such trips, we go early and then have breakfast in Copenhagen.

3/n
A grey train with open orange doors standing at a platform. There's a sign for trolleys, bikes, luggage and wheelchairs.
June 29, 2025 at 5:14 AM
philippbirken.fediscience.org.ap.brid.gy
First ride is an electric accordion bus. This is a standard one, but the town has even bought so called superbusses, which have two "accordions", not just one. This is part of an ongoing transformation of traffic: Electric busses, Bikes, less cars, more trees […]

[Original post on fediscience.org]
A green bus driving towards the viewer in a city street. The sun is low, as can be seen from the shadows.
June 29, 2025 at 5:05 AM
philippbirken.fediscience.org.ap.brid.gy
Glad midsommar!
Blåa, vita, och rosa blommor
June 20, 2025 at 2:10 PM
philippbirken.fediscience.org.ap.brid.gy
These will be nice big red apples come fall.

#TimelineCleanser #bloomscolling
A fruit tree full of white blossoms before a blue sky.
May 11, 2025 at 3:10 PM
philippbirken.fediscience.org.ap.brid.gy
#TimelineCleanser
A large magnolia in full bloom, behind it a garden, above blue sky.
May 1, 2025 at 4:22 PM
philippbirken.fediscience.org.ap.brid.gy
Today we had our spring meeting in our COMPUTE research school at #LundUniversity and the theme was software development.

I organized a session on threat assessment regarding our dependence on US software.

The main threats:
-Access to (commercial) software […]

[Original post on fediscience.org]
An image of a whiteboard with names of different softwares in different colours.
April 28, 2025 at 3:46 PM
philippbirken.fediscience.org.ap.brid.gy
This is where I will be spending quite some time from now on. And it's just 15 minutes by bike from where we live. Feels good!
A small wooden red house with a small garden with a few trees and bushea.
April 18, 2025 at 2:41 PM
philippbirken.fediscience.org.ap.brid.gy
Tschüss Genf, going home!

#nighttrain #TrainTravel #internationaltravel
One sees the crossed legs of a man sitting on a bunkbed, looking towards a train window. He wears a black Jeans and striped colorful socks. There's a Pyjama and a book on the bed.
February 21, 2025 at 9:04 PM
philippbirken.fediscience.org.ap.brid.gy
The physics committee has essentially taken the view that physics consists of experimental physics and theoretical physics, none of which I work on either. However, it has now happened twice that the prize went into computational physics. So I guess I should […]

[Original post on fediscience.org]
A light brownish worm. At the top end, it has white mussel like things. Source: United States Geological Survey, via Wikimedia Commons. License: Public Domain.
February 14, 2025 at 3:51 PM
philippbirken.fediscience.org.ap.brid.gy
I think we can all agree that the greatest sight in Stockholm is the 17th century warship Vasa, raised from the bottom of the harbour in the 1960s, where it sank during her maiden voyage in 1628. And of course we can also all agree that it would be totally […]

[Original post on fediscience.org]
A large 17th century warship, seen from the front and slightly above. It is situated within a large hall, dimly lit. There is a small bridge leading onto the deck. The ship is richly decorated, but not painted. The wood looks worn.
February 14, 2025 at 3:37 PM