Month: September 2009

 Egg-beater centrifuge may save lives

$2 Egg-beater centrifuge may save lives

Harvard’s George M. Whitesides is arguably the world’s most significant chemist. How arguably? Whitesides has the highest Hirsch index of any living chemist in the world. The Hirsch or h-index is a kind of weighted score based on a numerical analysis of a scientist’s published work which factors in both the number of papers and the number of citations those papers receive by other authors.

Back in October of 2008, Whitesides published a paper in the Royal Society of Chemistry’s journal Lab on a Chip that describes a technique for separating blood plasma for use in various immunoassays using a piece of plastic tubing taped to an eggbeater. The method can replace a $400 bench centrifuge for many purposes.

Electrobike Pi

Electrobike Pi

Spotted this sexy commercial electric bicycle in a back issue of Popular Science at the barber shop today. It’s called Pi, and the company that makes it is based out of San Francisco. The magazine article claims it uses a Nu Vinci continuously-variable transmission but the official company specs now only mention a Shimano 8-speed. Sounds like they’re still working out the kinks. Something to keep an eye on, though.