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Ashton Bradley

@adagger

Anomalous stress tensor; surfing the vortex

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31.07.2024
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Latest posts by Ashton Bradley @adagger

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What’s the (Lagrange) point? There are a few locations in the solar system where the push and pull of gravity mellows out and you can orbit in (relative) peace. Read all about these islands of tranquility we call Lagrange points!

From Ryan White @astroryan.bsky.social : There are a few locations in the solar system where the push and pull of gravity mellows out and you can orbit in (relative) peace. Read all about these islands of tranquility we call Lagrange points! ⚛️ 🔭 ☄️ 🧪
astrobites.org/2026/01/29/w...

01.02.2026 00:43 👍 92 🔁 22 💬 2 📌 1
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One university boosted gender diversity in advanced maths by over 30% in 5 years – here’s how A lack of gender diversity in maths means technologies such as AI and quantum computing are mainly designed by – and for – men.

Thanks @petraschwer.bsky.social - as shared by @monsoon0.bsky.social, the article link is here: theconversation.com/one-universi...

24.11.2025 22:52 👍 3 🔁 3 💬 0 📌 0
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We are in the era of Science Slop (and it's exciting)

It was accepted (with revisions)😀. I've updated my blog post on Science Slop superposer.substack.com/p/we-are-in-...
6/6

09.12.2025 17:16 👍 11 🔁 1 💬 1 📌 1
Photos of the 14 victims of the Montreal massacre:

Geneviève Bergeron, Hélène Colgan, Nathalie Croteau, Barbara Daigneault, Anne-Marie Edward, Maud Haviernick, Barbara Klucznik-Widajewicz, Maryse Laganière, Maryse Leclair, Anne-Marie Lemay, Sonia Pelletier, Michèle Richard, Annie St-Arneault and Annie Turcotte

and the rooms where they were killed.

Photos of the 14 victims of the Montreal massacre: Geneviève Bergeron, Hélène Colgan, Nathalie Croteau, Barbara Daigneault, Anne-Marie Edward, Maud Haviernick, Barbara Klucznik-Widajewicz, Maryse Laganière, Maryse Leclair, Anne-Marie Lemay, Sonia Pelletier, Michèle Richard, Annie St-Arneault and Annie Turcotte and the rooms where they were killed.

36 years ago today, 14 women, most of whom were studying engineering, were killed by an anti-feminist gun man at École Polytechnique in Montreal. I was a young graduate student studying physics at the time and I will never forget. #MontrealMassacre #NeverForget 🧪 👩‍🔬 ⚛️ 🎢 #AcademicSky 🇨🇦

06.12.2025 19:03 👍 575 🔁 250 💬 11 📌 12

A reminder that this gif and a similar one for the transit method are on Wikimedia Commons for anyone to use.

I'm actually putting together a teaching dossier at the moment and I'd love to hear from people if you've used any of my gifs for teaching, outreach, or science stuff!

Links to gifs below:

26.11.2025 13:53 👍 115 🔁 16 💬 5 📌 1

Twitter now displays where accounts are from and it has confirmed that too many of the political accounts are out of country bots.

Why are folks still there? To argue with bots? A waste of precious time while enriching the richest man on Earth.

Delete your account.

23.11.2025 14:56 👍 12190 🔁 3197 💬 624 📌 197
Posters with profiles of LGBTQ+ scientists

Posters with profiles of LGBTQ+ scientists

Poster advertising event on wall of the department

Poster advertising event on wall of the department

Getting ready to celebrate LGBTQ+ in STEM Day @sfuphysics.bsky.social ⚛️🎢🧪👩‍🔬🏳️‍🌈🏳️‍⚧️

21.11.2025 22:05 👍 26 🔁 5 💬 1 📌 0

Sadly, a perennially relevant post.

17.11.2025 16:22 👍 70 🔁 8 💬 1 📌 1

#Physics!

23.10.2025 21:59 👍 7 🔁 2 💬 0 📌 0
vscode and Julia code drawing epitrochoid and equations using Typst

vscode and Julia code drawing epitrochoid and equations using Typst

Luxor.jl can now add #typst text - including equations - to drawings. Useful for those with latex allergy 😉 Big thanks to Jakob Peters for his hard work! 🙏

#julialang #typst #epitrochoid

18.05.2025 15:06 👍 34 🔁 11 💬 0 📌 0
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Renewables overtake coal as world's biggest source of electricity Developing countries lead the historic clean energy charge but the US and EU rely more on fossil fuels than before, a think tank study shows.

Renewables overtake coal as world's biggest source of electricity
#PhysicsEd
#iTeachPhysics
#Science 🧪

www.bbc.co.uk/news/article...

08.10.2025 05:42 👍 47 🔁 13 💬 1 📌 0
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Nobel Prize in Physics 2025 The Nobel Prize in Physics 2025 was awarded to John Clarke, Michel H. Devoret and John M. Martinis "for the discovery of macroscopic quantum mechanical ...

The Nobel Prize in Physics 2025 was awarded to John Clarke, Michel H. Devoret and John M. Martinis "for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit." This Collection celebrates the contributions by the awardees. ⚛️ 🧪

07.10.2025 22:34 👍 54 🔁 21 💬 0 📌 1

While it is possible and sometimes useful to write that way, Julia doesn’t require it to achieve high performance code. That’s why most Julia isn’t written that way. In fact it often makes code less useful… the compiler and Julia work incredibly well

06.10.2025 14:54 👍 1 🔁 0 💬 0 📌 0

Julia?

04.10.2025 18:00 👍 3 🔁 0 💬 2 📌 0
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Five ways the second Trump term is reshaping climate science and policy A review of federal actions on science, data, and policy in the administration’s first eight months shows far-reaching consequences.

Amid today's fast-moving news cycles, it can be hard to keep up with the rapid changes happening to federal climate science in the US. Here's a review of some of the big changes in the US since January.

#physics #standupforscience

30.09.2025 18:38 👍 3 🔁 2 💬 0 📌 0

🧪⚛️. Come on, NSF leadership!

26.09.2025 11:34 👍 5 🔁 1 💬 0 📌 0
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What does it mean to be a physicist right now? The scientific enterprise is under attack. Being a physicist means speaking out for it.

“It is up to each of us to make the case, in language that resonates beyond academia, that science is not a luxury but a necessity,” says American Physical Society president John Doyle. “Now, as we face new challenges, advocacy must become a part of what we all do.”

#physics #standupforscience

26.09.2025 15:00 👍 17 🔁 2 💬 0 📌 1
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Schwinger effect appears in a 2D superfluid – Physics World Physicists model vacuum tunnelling in a simple system

A curious quantum phenomenon called the Schwinger effect could soon be simulated in the lab, say physicists in Canada. 🧪⚛️ ow.ly/NyVT50X2ayw

26.09.2025 15:37 👍 18 🔁 2 💬 0 📌 0
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Explore the mysteries of quantum mechanics with our Quantum Measurement sim! Prepare & measure superposition states, dive into photon polarization, and experiment with Stern-Gerlach setups. phet.colorado.edu/en/simulatio... #physics #chatphysics #STEM

27.09.2025 01:10 👍 15 🔁 4 💬 0 📌 1
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School history lessons minimise the role of women, report finds Campaigners say key stage 3 curriculum plays to misogny and teaches a ‘false version of the past’ The role of women in history goes far beyond Elizabeth I or Anne Boleyn, according to a campaign that seeks to add more female lives and achievements to the curriculum taught in England’s schools. Research by the group End Sexism in Schools found that women were largely absent from history taught in key stage 3, the first three years of secondary education in England. Monarchs were among only a handful of women mentioned by name alongside the suffragettes Emmeline Pankhurst and Emily Davison. Continue reading...

School history lessons minimise the role of women, report finds

24.09.2025 06:17 👍 261 🔁 98 💬 15 📌 16

No paddle!

22.09.2025 16:49 👍 1 🔁 0 💬 1 📌 0

National have huge marketing resources to create a reality distortion field

22.09.2025 12:15 👍 2 🔁 0 💬 0 📌 0
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Quantum gas keeps its cool – Physics World New measurements on Bose-Einstein condensate could help us better understand how objects transition from being quantum and ordered to classical and chaotic

Adding energy to a system usually heats it up, but physicists in Austria have now discovered a scenario in which this is not the case. 🧪⚛️ physicsworld.com/a/quantum-ga...

19.09.2025 09:43 👍 9 🔁 2 💬 0 📌 0
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Physicists extend the wave nature of large objects – Physics World Increasing the wave-like behaviour of nanoparticles brings fundamental quantum tests one step closer

An important step has been taken towards bridging the divide between quantum and classical physics. 🧪⚛️ ow.ly/r23s50WZh5l

19.09.2025 10:26 👍 52 🔁 11 💬 0 📌 2
Tutorial on Paraxial Fluids of Light at Cargèse IESC 2025 Conference at Cargèse IESC – May 2025

great paraxial fluids of light tutorial from @quantoptics-lkb.bsky.social

lab.quentinglorieux.fr/news/2025-08...

⚛️

17.09.2025 21:05 👍 0 🔁 0 💬 0 📌 0
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PsiQuantum announced that it has completed a series E venture round that raised US$1 billion to break ground on planned quantum computing sites in Brisbane and Chicago.

Read the OPN story: https://bit.ly/4nsVhVI 💡 ⚛️

13.09.2025 20:48 👍 3 🔁 1 💬 0 📌 0
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It's been a while since I've written a post. This will be my first one here. I thought a good example might be a butterfly-like plot. Done with @makie.org (thanks @simi.bsky.social) in the @julialang.org and OrdinaryDiffEq.jl (actively being maintained by @chrisrackauckas.bsky.social

05.12.2024 00:15 👍 20 🔁 4 💬 2 📌 0
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Makie got used in a groundbreaking Neutrino discovery, published in the renowned Nature journal :)
This is the perfect time, to show off a few projects created with Makie:
makie.org/website/blog...

13.02.2025 17:50 👍 14 🔁 2 💬 0 📌 0

I’ll add this to my submission on Minister Stanford’s fucking up of our curriculum #nzpol

11.09.2025 18:46 👍 26 🔁 7 💬 2 📌 0