March 06, 2013
Noyce Conference Room
Veit Elser (Cornell University)
Abstract. SFI is my spring break destination from the frozen northland where I occasionally teach the introductory physics course about waves. A standard part of the curriculum deals with computing a diffraction pattern, given a pair of slits of a given size and separation — but not the reverse, i.e. directly computing the structure of the slits from the diffraction pattern. This colloquium begins with a tutorial on solving the reverse problem and puts this in the context of current efforts to image molecules with free-electron x-ray lasers. The principle of the algorithm that solves the x-ray "phase problem," as it is usually called, is remarkably general and has proven to be a powerful strategy for solving a broad range of constraint problems. A sampling of these, from proteins to packings, are described at the end of the talk.
Purpose: Research Collaboration
SFI Host: Cris Moore
Scientist Mirta Galesic and artist Raven Chacon present "Creative collaboration in art and science," the fourth annual Chaos to Complexity discussion Saturday afternoon, May 30, in Santa Fe.
In a ceremony Wednesday evening in Santa Fe, SFI awarded science teacher Dave Brooks and ten high school seniors the Institute's 2015 High School Prize for Scientific Excellence.
During an April 8 SFI Community Lecture in Santa Fe, statistician Susan Murphy showed how a healthcare decision approach that adapts treatment to each patient over time can improve patient ...
During an SFI Community Lecture March 11 in Santa Fe, MIT's Alex Pentland described ways the mathematical analysis of social networks is fertile ground for understanding human behavior. Watch ...
Register now for SFI's 2015 Short Course — Exploring Complexity in Social Systems and Economics — August 25-27 in Santa Fe.