Can we have a title on this that indicates that it's physics, not tech, please? I wouldn't have clicked if I had known it was physics.
EDIT: um, I'm not commenting to complain that the post is on HN; I'm commenting to complain that the post is on HN with a title that makes it look like it might have to do with computers (e.g., windowing systems or frames in web browsers).
I like physics, but as a layman I have no idea what they are demonstrating. (Something to do with relativity, got that...) A little background information would be appreciated!
One of the predictions of General Relativity is that a spinning massive body will drag neighboring spacetime along with it - that is, impart a bit of the spin to anything nearby. See http://en.wikipedia.org/wiki/Frame_dragging
This is a very subtle effect if you don't have a neutron star or black hole around, but using gyroscopes built to crazy tolerances, this experiment appears to have demonstrated it (at a head-spinning cost).
EDIT: um, I'm not commenting to complain that the post is on HN; I'm commenting to complain that the post is on HN with a title that makes it look like it might have to do with computers (e.g., windowing systems or frames in web browsers).