Roy Williams
@roydavidwilliams.bsky.social
Edinburgh resident and identifies Scottish but also American. Data mining in astronomy. History, photography, cooking, bad jokes.
I wonder why the refractive index of water changes with wavelength ...
February 10, 2026 at 8:02 AM
I wonder why the refractive index of water changes with wavelength ...
Its because so many have lost the capacity for empathy. Their minds are closed to suffering unless its personal. I dont know why they are like this.
February 8, 2026 at 3:23 AM
Its because so many have lost the capacity for empathy. Their minds are closed to suffering unless its personal. I dont know why they are like this.
At the same time, Europe is being overtaken by senior Americans with proven track record. Escaping Trumpistan.
February 7, 2026 at 2:45 PM
At the same time, Europe is being overtaken by senior Americans with proven track record. Escaping Trumpistan.
Also on BBC radio 4 yesterday: www.bbc.co.uk/sounds/play/...
BBC Inside Science - Where do forever chemicals come from? - BBC Sounds
New research on how forever chemicals get into our environment.
www.bbc.co.uk
February 6, 2026 at 11:20 AM
Also on BBC radio 4 yesterday: www.bbc.co.uk/sounds/play/...
Did you do it in 5 minutes by asking Claude Code? Thats what they all claim on reddit.
February 5, 2026 at 1:01 PM
Did you do it in 5 minutes by asking Claude Code? Thats what they all claim on reddit.
Remember 20 years ago when we counted our carbon footprint and shamed longhaul flyers?
February 5, 2026 at 8:03 AM
Remember 20 years ago when we counted our carbon footprint and shamed longhaul flyers?
So that skilled workers are unemployed and students fail to learn. How about no AI?
February 3, 2026 at 8:22 PM
So that skilled workers are unemployed and students fail to learn. How about no AI?
400 years ago people "knew" that witches caused evil. Now they "know" Trump is a good man. You cant change their minds.
February 3, 2026 at 4:08 PM
400 years ago people "knew" that witches caused evil. Now they "know" Trump is a good man. You cant change their minds.
I wonder if theres a large old ongoing facility that could be cut so the young can do research. Ahem... ISIS ... ahem.
February 3, 2026 at 1:06 PM
I wonder if theres a large old ongoing facility that could be cut so the young can do research. Ahem... ISIS ... ahem.
Another good image is nylon tights twisting up in the drier. The particle emission is trapped and twisted and accelerated by magnetic fields
January 31, 2026 at 7:33 AM
Another good image is nylon tights twisting up in the drier. The particle emission is trapped and twisted and accelerated by magnetic fields
I have always thought of NL as a place where social democracy actually works. Like Scandinavia. Maybe Im just not close enough to see the reality.
January 30, 2026 at 9:00 AM
I have always thought of NL as a place where social democracy actually works. Like Scandinavia. Maybe Im just not close enough to see the reality.
Reposted by Roy Williams
Hooray for Starmer! Quietly getting the job done.
January 30, 2026 at 6:20 AM
Hooray for Starmer! Quietly getting the job done.
I loved algebra. It was a gateway the the joy of higher math.
January 30, 2026 at 6:19 AM
I loved algebra. It was a gateway the the joy of higher math.
In 2021 people assumed Trump was already finished and didnt want the courtroom drama. They didnt realise the cult would grow and metastatise like cancer
January 30, 2026 at 6:11 AM
In 2021 people assumed Trump was already finished and didnt want the courtroom drama. They didnt realise the cult would grow and metastatise like cancer
In the movie Contact, Jodie Foster has a question for an advanced alien civilization: "How did you survive your technological adolescence without destroying yourself?"
January 30, 2026 at 3:28 AM
In the movie Contact, Jodie Foster has a question for an advanced alien civilization: "How did you survive your technological adolescence without destroying yourself?"
I wonder how the gloomy outlook for UK scientists compares to the outlook of US scientists?
January 29, 2026 at 10:58 AM
I wonder how the gloomy outlook for UK scientists compares to the outlook of US scientists?
Reposted by Roy Williams
The night sky looks steady. It's not. π₯
In the night sky, asteroids drift. Stars pulse and flicker. Distant galaxies flare when something dramatic like a supernova is happening inside them.
The Universe is constantly changing, even when our eyes canβt see it. ππ§ͺβοΈ
In the night sky, asteroids drift. Stars pulse and flicker. Distant galaxies flare when something dramatic like a supernova is happening inside them.
The Universe is constantly changing, even when our eyes canβt see it. ππ§ͺβοΈ
January 26, 2026 at 6:50 PM
The night sky looks steady. It's not. π₯
In the night sky, asteroids drift. Stars pulse and flicker. Distant galaxies flare when something dramatic like a supernova is happening inside them.
The Universe is constantly changing, even when our eyes canβt see it. ππ§ͺβοΈ
In the night sky, asteroids drift. Stars pulse and flicker. Distant galaxies flare when something dramatic like a supernova is happening inside them.
The Universe is constantly changing, even when our eyes canβt see it. ππ§ͺβοΈ
Rabbits in the house will chew your cables and things just stop working! Don't do it!
January 26, 2026 at 10:33 AM
Rabbits in the house will chew your cables and things just stop working! Don't do it!
I hear the CEO of Ikea has become the new prime minister of Sweden..... They're still assembling their cabinet! .... ha ha
January 26, 2026 at 9:18 AM
I hear the CEO of Ikea has become the new prime minister of Sweden..... They're still assembling their cabinet! .... ha ha
The people in 8/3 get plenty of exercise! But Main Door is a jewel.
January 25, 2026 at 6:14 AM
The people in 8/3 get plenty of exercise! But Main Door is a jewel.
Same as a hotdog in composition
January 25, 2026 at 6:10 AM
Same as a hotdog in composition
DST is a real benefit in high latitudes. Light in the morning when you need it, light all evening in summer. I am at 56 degrees latitude.
January 24, 2026 at 12:23 PM
DST is a real benefit in high latitudes. Light in the morning when you need it, light all evening in summer. I am at 56 degrees latitude.
Criminal Trump made half a billion from selling oil after the Venezuela raid.
January 24, 2026 at 12:20 PM
Criminal Trump made half a billion from selling oil after the Venezuela raid.