Interference with 10,000-Particle “Particles”: “Matter-wave interference with particles selected from a molecular library with masses exceeding 10000 amu”

I’m teaching Quantum Optics this term, and one of my students picked “Atom Optics” off the list of suggested paper topics. When he asked for pointers, I said “You should check out the diffraction stuff Markus Arndt’s group does.” And just like that, a paper from the Arndt group turns up from the Arxiv Blog… […]

Happy Pip-Day!

Two years ago, as of 4:35 this morning, The Pip was born. And now he’s a great big toddler, obsessed with pirates and dinosaurs, running everywhere and talking a LOT… He’s had a bit of a rough week, with another flare-up of conjunctivitis in his right eye, requiring eye ointment and antibiotics, the less said […]

Old Thesis Club: Experiments on Gravitation by Earle Milton Bigsbee, 1932

One of the interesting things about the pile of old theses we found in the basement is the opportunity to look at things that nobody believes any more. Past installments of the Old Thesis Club have shown people fumbling toward an understanding of quantum physics via electron scattering and spectroscopy, but in both of those […]

The Ultimate Alien Message

In January of 1990, a friend and I designed the ultimate message to an alien civilization. Okay, admittedly, this wan’t a recognized scientific accomplishment. After all, in January of 1990, I was a freshman at Williams. The alien message we designed was part of a first-year Winter Study seminar class. Winter Study, for those not […]