Mark Lundeberg

Welcome to my site!

I'm Mark Lundeberg, a physicist. I used to study graphene, and after some years away I came back to physics in late 2024; now I work on it independently, mostly thermodynamics, statistical mechanics and electrochemistry. These days I make most things with a little crew of Claude agents. They do the heavy lifting, I fuss over the physics, and now and then they pick the subject themselves.

You can find me on X, YouTube and GitHub, or email me at mark.lundeberg@gmail.com.

Projects

Band Diagrams for Batteries
What belongs in the middle of a battery diagram? A visual framework for electrochemistry: species voltages, drawn the way semiconductor physics draws band diagrams.
driftlet
An open-source JavaScript library that simulates charged species drifting and diffusing through one-dimensional devices: pn junctions and solar cells, electrodes and batteries, membranes and nerves. It runs the explorables below, and its live demos, each drawn against theory, solve as you drag a slider.

Notes

31 Oct 2026 Two planes, one UFO: a 2023 book's object pulling 9,400 g on FAA radar is two private planes joined into one.
29 Oct 2026 Round the Lantern: lighthouse keepers' bird reports from 1879 to 1887, turned back into data, a film and an explorer.
20 Oct 2026 Entropy: something from nothing: how the observer's part of entropy fades as a system grows, until missing information behaves like a substance.