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These are my personal notes from day four of the Topics in Astroparticle and Underground Physics Conference. The full conference materials are online: https://indico.cern.ch/event/1199289/timetable/#20230831 August 31, 2023 The fourth day kicked off with a focus on gravitational waves [Mavalvala]. The speaker began with a history of the technology. The LIGO […]

TAUP Journal: Day Four

These are my personal notes from day three of the Topics in Astroparticle and Underground Physics Conference. The full conference materials are online: https://indico.cern.ch/event/1199289/timetable/#20230830 August 30, 2023 We began the third day plenaries with a focus on dark matter. The first talk explore models for dark matter [Cirelli]. The potential […]

TAUP Journal: Day Three

A view across the Rauthsplatz food market, The city hall is visible in the distance.

The plenaries on the second day began with beam-based neutrino physics [Wen]. The speaker reiterated the target parameters and discussed existing results and future facilities for measuring them. They began by noting that sin2(2theta13) is known by Daya Bay to 2.8%, and that Double Chooz has just updated their measurement […]

TAUP Journal: Day Two

These are my personal notes from day one of the Topics in Astroparticle and Underground Physics Conference. The full conference materials are online: https://indico.cern.ch/event/1199289/timetable/#20230828 August 27, 2023 The rhythm of the TAUP conference is to have plenary sessions in the morning, followed by a lunch break, then parallel sessions throughout […]

TAUP Journal: Day One

To Vienna I write this while sitting on a plane flying just south of Ottawa. We are early in the flight. We departed Toronto a little behind schedule and will land in Vienna, Austria around 08:30 local time tomorrow. The in-flight meal has not been served, and we are in […]

TAUP Journal: Day Zero

Tomorrow I will board a plane at the Sudbury airport and, connecting through Toronto, depart for Fredericton, New Brunswick. I am excited about this for at least a two reasons. First, this coming week is the Canadian Association of Physicists (CAP) annual Congress. The week-long meeting will bring students, post-docs, […]

From Sudbury to Fredericton

It has been a long time since I was crammed in a big unpleasant crowd of people. Let’s take stock of the last three years. My last major international trip was at the very beginning of March 2020. Outbound from Dallas to CERN, the planes were semi-normal (more masking than […]

On Crowds Three Years After a Pandemic Is Declared

After two negative COVID-19 antigen tests this past week, I returned to in-person work. I kept myself masked in the office, especially when I was around anyone else. When alone in my own office, or eating in a more open public area, I lost the mask (unless someone showed up […]

COVID Journal: Day 14 (Final Day)

The CDC recommends calling the first day you present symptoms as “Day Zero”.“Day One” is the first full day over which you experience symptoms from a SARS-CoV-2 infection. By that counting, I am on day 8, the 8th full day of symptoms. What is impressive to me is the staying […]

COVID Journal: Day 8

In the spirit of deepening the open federated social web, this blog is now powered by ActivityPub, the open federated social standard. This is thanks to the WordPress plugin “activitypub”. You can follow this blog using the webfinger @steve. Or not. It’s cool. Whatever. 🙂

ActivityPub All the Things: This Blog is Follow-able Now

The World Health Organization declared SARS-CoV-2 a global pandemic on 11 March 2020. At the time, I was isolating at home after returning from CERN. I was not allowed on campus because I had been abroad when my university declared that all international travel for work purposes was ended. But […]

COVID-19: Round One

Updated on September 16, 2025: A reader noted I referred to 192.168.1.50 at one point as the “Web Server”, but this was a typo. I should have said “Media Server”. I have made edits to clarify example IP addresses where the main web server and where the media server are […]

Some Tips on Setting Up a Mastodon Instance Using Docker …

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Follow this blog on Mastodon or any other ActivityPub-enabled social media system. This blog’s identity (webfinger) is @steve@steve.cooleysekula.net.

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    October 15, 2025
    Good morning, #Sudbury!
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    October 15, 2025
    I pulled out my own undergraduate notes for 2nd semester quantum mechanics. I was doing it to help communicate something to a colleague of […]

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