What Goes Around Is Really Round: “Improved measurement of the shape of the electron”

The big physics story of the week is undoubtedly the new limit on the electric dipole moment (EDM) of the electron from Ed Hinds’s group at Imperial College in the UK. As this is something I wrote a long article on for Physics World, I’m pretty psyched to see this getting lots of media attention, […]

Inconstant Constants: “Probing fundamental constant evolution with redshifted conjugate-satellite OH lines”

Via Jennifer Ouellette on Twitter, I ran across a Discovery News story touting a recent arxiv preprint claiming to see variation in the fine-structure constant. It’s a basically OK story, but garbles a few details, so I thought it would be worth giving it the ResearchBlogging treatment, in the now-traditional Q&A format. What did they […]

Amazing Laser Application 2: Laser Cooling!

What’s the application? Using lasers to reduce the speed of a sample of atoms, thereby reducing their temperature to a tiny fraction of a degree above absolute zero. What problem(s) is it the solution to? 1) “How can I make this sample of atoms move slowly enough to measure their properties very accurately?” 2) “How […]