iiinova — where your digital self keeps evolving

Andreas Freise

@gwoptics.bsky.social

302 followers 245 following 1.3K posts

Looking for gravitational waves, modelling light. Photos are taken by me unless stated otherwise (provided under a CC BY-NC-SA 4.0 license).

Posts Replies Media

Reposted by Andreas Freise

Marc van Oostendorp @fonolog.bsky.social · 23h

De Nederlandse taal is gezegend geweest doordat we Paulien Cornelisse (1976-2026) in ons midden hebben gehad. neerlandistiek.nl/2026/10/paul...

neerlandistiek.nl

De Nederlandse taal is gezegend geweest doordat we Paulien Cornelisse (1976-2026) in ons midden hebben gehad.

Andreas Freise @gwoptics.bsky.social · 12h

Everyone else has gone. #photography #blackandwhite

A photo of an airport check-in hall with a reflective black tile floor and a geometric metal structure and small bright lights in the ceiling. The hall is mostly empty, looking deserted.

Andreas Freise @gwoptics.bsky.social · 20h

Or not, obviously. #photography

A photo looking on the sharp corner of a red brick wall. A white sign on the right shows the number "2B" in blue letters.

Andreas Freise @gwoptics.bsky.social · 30/09/2026

Summer is peeling off. #photography

A photo showing tilted walls of a large concrete structure with a few graffiti tags. On one side of the concrete a white paper with a black palm tree silhouette has been posted. The upper right corner is starting to peel off.

Andreas Freise @gwoptics.bsky.social · 30/09/2026

S is for Science. #photography

A close -up photo of an illuminated train station sign, showing a large white uppercase "S" on a dark blue background with a cracked, web-like pattern around it.

Andreas Freise @gwoptics.bsky.social · 29/09/2026

I am sure this can is very a special one. #photography

A photo showing a dark can standing in front of a bright orange gradient background created by a spotlight from above. The scenes is reflected in a shiny black reflective surface below the can.

Andreas Freise @gwoptics.bsky.social · 29/09/2026

Warm wood and a friendly grey. #photography #TextureTuesday

A photo with the top half showing a textured gray surface (fabric) and the bottom half a smooth, light brown wooden surface with horizontal grain (table).

Andreas Freise @gwoptics.bsky.social · 28/09/2026

Neighbours. #FotoVorschlag ‘Typisch für meinen Wohnort‘ #photography

A photo of a brick wall with white plaques displaying the numbers 85, 83, 81, 79. Below are two blue mailboxes and to the right is a door of the same colour under a curved brick arch.

Andreas Freise @gwoptics.bsky.social · 28/09/2026

Smile. #photography

A photo of a hotel room with a double bed with white pillows and sheets in front of a green wall with a large, pixelated smiley face made of yellow and black tiles.

Andreas Freise @gwoptics.bsky.social · 27/09/2026

People. #photography

A photo looking down on a large colourful crowd of people gathered outdoors at night.

Reposted by Andreas Freise

LIGO Scientific Collaboration @ligo.org · 25/09/2026

The latest issue of the @ligomagazine.bsky.social is now out with all the latest #GravitationalWaves news! Read it for free at ligo.org/wp-content/u... 🔭🧪⚛️🎶

LIGO Magazine Issue 29

A+ bigger beamsplitters: A major upgrade for LIGO's A+ phase, p 18
GWTC-5.0 - the catalogue continues: 161 events added to the collection, p 6
LIGO Virgo KAGRA teamwork: Gravitational-wave autotune, p 8
Sept. 2026 LVK Meeting in Pune: GW research in India, p 11
A decade on... LISA Pathfinder persists in discovery, p 28

Reposted by Andreas Freise

Prof Anna Watts @profannawatts.bsky.social · 25/09/2026

The Els Koffemann postdoctoral fellowship, offered by my colleagues at our Institute of Physics, is accepting applications. academicjobsonline.org/ajo/fellowsh...

academicjobsonline.org

University of Amsterdam, Institute of Physics, Diversity and Inclusion Council

Job #AJO32465, Els Koffeman Postdoctoral Fellowship in Physics at the University of Amsterdam, Institute of Physics, Diversity and Inclusion Council, University of Amsterdam, Amsterdam, Noord-Holland...

Reposted by Andreas Freise

Shawn @ftlshawn.bsky.social · 27/09/2026

Window With Vine, Rust And Flowers.

Andreas Freise @gwoptics.bsky.social · 27/09/2026

Striped. #photography #SilentSunday

A photo showing part of a pyjama leg with black, white, and orange vertical stripes. The background is a beige wall with white elements at the bottom and top, and vertically down near the left of the image.

Andreas Freise @gwoptics.bsky.social · 26/09/2026

Lamps, failing at their job. #FotoVorschlag 'Restlicht' #photography

A dark photo of two wall-mounted candle-style lights on a dark wooden wall. On can just about see golden frames on the wooden panels.

Andreas Freise @gwoptics.bsky.social · 26/09/2026

Queues. #photography

A photo of a row of trolleys lined up on a red carpeted floor in a bright, modern airport area with curved ceilings and large windows.

Andreas Freise @gwoptics.bsky.social · 25/09/2026

The airport lounge sessions. #photography #travel

Photo showing a red bench in a airport area. Sunlight streams in through large tilted windows on the right.

Andreas Freise @gwoptics.bsky.social · 25/09/2026

Evening in Toulouse. #photography #FensterFreitag

A nighttime photo of a stained glass window with red flowers and green leaves in the design, and with a small, wrought-iron balcony. The brick wall features decorative grooves and some patches with colour (or discoloring).

Andreas Freise @gwoptics.bsky.social · 24/09/2026

It's not sports day apparently. #photography

A photo looking against the daylight, through greenery, and across a small canal at seats next to an empty sports field. The red and black seats are in a transparent structure for wind and rain protection.

Reposted by Andreas Freise

National Institute for Subatomic Physics (Nikhef) @nikhef.bsky.social · 23/09/2026

Niet alleen Nikhef doet mee aan het Weekend van de Wetenschap, ook onze partneruniversiteiten hebben fantastische evenementen in petto, bekijk ze hier: www.nikhef.nl/evenement/we...

Andreas Freise @gwoptics.bsky.social · 23/09/2026

Late summer tourists. #photography #blackandwhite

A black and white photo showing two people with suitcases walking on a paved sidewalk in a city towards a low bright sun.

Andreas Freise @gwoptics.bsky.social · 23/09/2026

Rolling. #photography

A photo of a brilliant white surface with several colorful semi-transparent spheres. Sunlight from the top right is creating elongated colourful shadows behind the spheres. The surface also has circular black areas, probably holes.

Andreas Freise @gwoptics.bsky.social · 21/09/2026

Twenty two. #photography #RandomNumber

A photo of a light-colored rough-textured wall with horizontal moldings and a smooth door entrance, illuminated by late sunlight filtered through the canopy of nearby trees. The number 22 is painted in black on the smooth part of the wall.

Andreas Freise @gwoptics.bsky.social · 21/09/2026

Amsterdammers. #photography #Amsterdam

A photo of a heron perched on top of a white, cone-shaped street lamp, surrounded by tall trees.

Andreas Freise @gwoptics.bsky.social · 20/09/2026

Bean by bean. #photography #SilentSunday #coffee

Photo showing a few coffee beans scattered on a wooden surface. Light from the top creates dark shadows below the beans and brings out the texture of the wood.

Andreas Freise @gwoptics.bsky.social · 19/09/2026

One of the darker greys. #photography #caturday

A dark black and white photo looking down on an outside area with a concrete floor and a white wall. A dark, possibly back, cat is passing by.

Andreas Freise @gwoptics.bsky.social · 19/09/2026

Lost in the wood. #photography

A photo showing a restroom entrance with wooden vertical slats on the overlapping walls. LED strips illuminate the ceiling and floor edges.

Andreas Freise @gwoptics.bsky.social · 18/09/2026

A bit random. #photography

A photo looking up at a green ceiling and a group of eight ring-shaped, dark brown light fixtures arranged in an asymmetric pattern. Each light fixture has a white inner ring emitting a soft glow.

Reposted by Andreas Freise

Simon T. @sitobin.bsky.social · 18/09/2026

Walton Lighthouse. Santa Cruz.

Andreas Freise @gwoptics.bsky.social · 18/09/2026

Back at square one. #photography #FensterFreitag

A photo looking directly at a large, illuminated frosted window in a dark brick wall. A faint reflection of a person is visible. Below the wall one can see a brick pavement and a metal grate.

Andreas Freise @gwoptics.bsky.social · 17/09/2026

That's wet. #photography

A photo of small piece of railroad tracks. The tracks are wet. Water distorted by falling rain drops is standing in between the tracks.

Andreas Freise @gwoptics.bsky.social · 17/09/2026

Black and white (mostly). #photography

A photo of a black wooden wall with a white-framed window or door with black wooden shutters. Below the wall one can see a stone foundation.

Andreas Freise @gwoptics.bsky.social · 16/09/2026

Across. #photography

A photo looking down on a paved stones with white stone lines forming a stretched cross over the main gray stones.

Andreas Freise @gwoptics.bsky.social · 16/09/2026

More experiments in white. (The shown art piece is Pregnant White Within Me by Anish Kapoor.) #FotoVorschlag 'Im Museum' #photography

A black-and-white photo of a piece of art in a museum. A large room with wooden floors and a mostly translucent roof features a large white wall with a wide 'pregnant' bulge. A person can be seen walking across from the right.

Andreas Freise @gwoptics.bsky.social · 15/09/2026

Modern design failure. #photography

A photo of a 'turn' in dimly lit staircase with two rectangular modern lamps, white walls and a window. The window is behind diirty looking sheer curtains.

Andreas Freise @gwoptics.bsky.social · 15/09/2026

In the dark. #photography #TextureTuesday

A photo of a stone wall with crumbling plaster in a slightly gloomy outdoor underpass. In the lower right is a small piece graffiti of a stickman releasing a red heart like a small balloon.

Andreas Freise @gwoptics.bsky.social · 14/09/2026

A bit grey. #photography #ToInfinity

A black and white photo looking along a tree-lined pathway in a park. The tall trees form an almost completely closed canopy overhead.

Andreas Freise @gwoptics.bsky.social · 14/09/2026

Following a lead. #photography

A photo of a red extension cord lying on a smooth, light-colored floor, running around a corner through an open door on the right.

Andreas Freise @gwoptics.bsky.social · 13/09/2026

Attracted by the light. (This ends the series of high photon-count images, and we go back towards the low-light photograph in the north near the end of the year...) #photography

A photo showing a group of passengers with luggage standing on a broad deck inside a ferry, looking at an almost closed car ramp. The interior of the ferry is almost dark with bright sunlight coming in through the gap above the ramp.

Andreas Freise @gwoptics.bsky.social · 13/09/2026

White washing. #photograpjy #SilentSunday

A photo of a whitewashed church under a blue sky with a few white clouds, partially obscured by large green tree. The tree trunk is also white-washed and surrounded by a grey-white stone bench.

Andreas Freise @gwoptics.bsky.social · 12/09/2026

Jungle cats. #photography #caturday

A photo showing two black-and-white kittens playing in palm trees outdoors.

Andreas Freise @gwoptics.bsky.social · 11/09/2026

And this is how the photos get made. #photography #BehindTheScenes

A photo showing the shadow of a person holding a camera on a wall of an unfinished brick building. Sunlight from the sunset creates warm light and deep shadows with a blue sky in the background.

Andreas Freise @gwoptics.bsky.social · 11/09/2026

Finding the horizon. #photography #FensterFreitag

A photo showing the view through two open doorways framing a small piece of the see and the horizon at sunset. The doorways are part of a raw unfinished building structure with exposed bricks making walls and stairs.

Andreas Freise @gwoptics.bsky.social · 10/09/2026

Gate. #photography

A close-up photo of a dusty light blue metal door with some geometric pattern as decoration and the Greek letters "ΒΕΓ" below.

Andreas Freise @gwoptics.bsky.social · 10/09/2026

Here and there. #photography

A photo looking out of a narrow alleyway with bright but weathered stone and plaster walls, looking at several doors on two levels (red and green wooden doors on the ground and a brown door up the stairs and across a balcony).

Reposted by Andreas Freise

Sam Johnson @analoguelass.bsky.social · 09/09/2026

Solitude - photograph of a Belted Galloway taken with my Nikon F2 and Tri-X 400 developed with DD-X and printed onto mulberry paper #believeinfilm #lakedistrict

A 4x4 black and white photograph of a Belted Galloway printed onto delicate mulberry paper. The cow has a striking black coat with a distinct white belt around its middle.

Reposted by Andreas Freise

Romel.photo @romelphoto.bsky.social · 09/09/2026

Silhouette Just sharing my pictorial photography, thanks for watching🤝 #photography #streetphotography #ICMphotography #photo #japan #hongkong #fineartphotography #fineart

Reposted by Andreas Freise

Anton Pannekoek Institute for Astronomy @api.uva.nl · 09/09/2026

On Friday September 18, @profannawatts.bsky.social will be giving a free public lecture! The title is Six Decades of Neutron Stars. More info & abstract at api.uva.nl/nl/content/e... Where: Science Park 904, Amsterdam Time: 19:00 Tickets: pretix.eu/API/Lecture9...

Lecture: Six Decades of Neutron Stars

Fri, Sept. 18, 2026

Andreas Freise @gwoptics.bsky.social · 09/09/2026

Inconvenient location. #photography

A photo of a white chapel or small church on a hilltop in the distance, surrounded by terraced greenery, and with some higher hills in the background.

Andreas Freise @gwoptics.bsky.social · 09/09/2026

Silhouettes. #photography #MeerMittwoch

A photo with a silhouette of a person jumping into shallow ocean waves with their arms outstretched, with the water splashing around them. In the background the sea is relatively calm and the sky is clear.