Because of my long association in various contractual capacities with NASA, friends and neighbors often turn to me to opine about happenings with the agency. The most recent spate of questions began with the stand-down of the Space Transportation System, aka the Shuttle. Most have the perception that NASA is folding. Completely. I hasten to reassure them that NASA is …
Functional Fixedness
What do a flock of starlings (known as a murmuration) and ferromagnetism have to do with each other? On the surface, probably nothing. Nothing, that is, unless you are a team of scientists with a perspective and approach that goes outside what their nominal area of study seems to call for. A team headed by William Bialek at Princeton University …
It Must Be Magic
A little item has crossed my desk twice in the past week. As is often the case, it came from two different correspondents, a continent apart. How and why such things spread is worthy of another post, but for now, allow me to point you to this: A little thought and some research that confirmed my hypothesis was very satisfying, …
Hydrodynamics and Crowds
I took some time today to try to catch up on readings that have eluded me owing to other, perhaps more pressing matters. An article in the December 2011 issue of Communications of the ACM 54(12) caught my eye, with the engaging title of “Visual Crowd Surveillance through a Hydrodynamics Lens”, by Moore, Ali, Mehran, and Shah (included just for …