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Some selected teaching evaluations from my upper-division Quantum II class last semester. 🥲 Here is my offer to students - if you give me your earnest attention, then for three hours a week, I will use every skill in my power to teach you what I know about the physical world.

Physics friends, how do you pronounce the abbreviation for a silicon photomultiplier?

Members of the CU Boulder 🦬 experimental nuclear physics group preparing for the Au+Au run in just two weeks at Brookhaven Lab's Relativistic Heavy Ion Collider. We are excited to have post-doc Dr. Tanner Mengel Tanner Mengel join the team just in time for sPHENIX data-taking!

Big hiking guy ⛰️☀️

Imagine being European and having to wait until the 3rd of Fourteenthmonthober to celebrate Pi Day. Embarrassing. 🙄

A big moment - Dr. Blair Seidlitz, CU Boulder Physics Ph.D. '22, giving his prize talk for the 2024 Dissertation Award in Hadronic Physics at the American Physical Society GHP Meeting this weekend in Anaheim, CA. Congratulations Blair!!

3yr old (singing to himself): "A - B - C - D - E - F - G - H - O - T - T - O - G - O ..."

We have had two exceptional undergraduate researchers working with the CU Boulder Physics experimental nuclear physics group this year! Elena Adams and Denali Jah sat data-taking shift at RHIC, wrote their Honors Theses on sPHENIX calorimeter data, and are now visiting grad schools!

Great Quark Matter 2025 conference in Germany last week! Some photos of talks by our CU Boulder Physics group + alumni: * JaeBeom Park, first sPHENIX physics! * Blair Seidlitz (PhD '22), collectivity plenary * Chris McGinn, jets plenary * Sruthy Das (PhD '24), flash talk award

Exploring flower towns and castles along the Alsatian wine route just before Easter. This kid is a natural, at home wherever he finds himself. France is the 7th country my world traveler guy has been to. 🇫🇷🛩️

This meetup in Freiburg was very important to me - there are four generations of Perepelitsas, from different branches, who came together for this photo. 🇺🇦💪

Some photos from our week on Mexico's Pacific Coast, with fishing, boating, and swimming in the ocean. Even though I lived in California for about a decade, this was my first time - Mexico 🇲🇽 is the 47th country I have been to and the 8th for my son (shown here Ghibli-fied 😊).

Pics of our CU Boulder Physics experimental nuclear physics group at the Brookhaven Lab RHIC/AGS Users Meeting! Grad student Sam Liechty won a Merit Award, post-doc JaeBeom Park and grad student Dan Lis gave sPHENIX talks, and I was happy to contribute to the "RHIC 25" Symposium.

Exciting start of sPHENIX data-taking with Au+Au beams at the Brookhaven Lab Relativistic Heavy Ion Collider! Our CU Boulder Physics team Tanner Mengel, Dan, Joey, and Sam were in the control room for first collisions, and myself as (a very tired) Shift Leader the week after. 💪