June 2009
5 posts
More corrections on the Klein thing →
So.
Way back in the mists of…January, I posted a TED talk about Joshua Klein’s studies on crows.
Then the NYTimes put up a correction, which I linked to as well.
Turns out, as always, there’s more to the story. So here’s Klein’s bit, which I felt it was fair to post once I stumbled across it.
How I Won a Copyfight →
Fairly impressive work by one student to truly own the code he wrote for class, and own the right to share it in a legal and ethical fashion.
Acoustic Black Hole Created in Bose-Einstein... →
The general idea is to set up a supersonic flow of atoms within the BEC. Sound waves moving against this flow can never make any ground. So the region where the flow changes from subsonic to supersonic is an event horizon. Any sound waves (or phonons) created inside the event horizon can never escape because the flow there is supersonic. That’s the black hole.
Welcome to the future....