A brace of sports divers from 1969

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A brace of sports divers from 1969

Postby koimaster » December 19th 2018, 3:23pm

This week, Ahmed Zewail, the Egyptian-American Nobel prize-winning chemist died. Zewail pioneered the field of femtochemistry, a sub-discipline within chemistry in which ultrafast lasers are used to study the atomic scale dynamics of the chemical bond. The lasers he used produced a stream of very short pulses of light, each of which lasting a few tens of femtoseconds,* and much like a stroboscope appears to produce stop flow animation on the dance floor, so his lasers were able to take a series of snap shots of chemistry on the fly. One key aspect of this work was to provide experimental validation for the concept of the transition state, a term used to describe the loose aggregation of atoms arranged in a structure where chemical bonds are in the process of forming and breaking as colliding chemical reactants arrange themselves into chemical products. At the transition state, the system finds itself at a mathematical turning point, a maximum in the potential energy profile that describes the path from reactants to products. At this point the system can roll over the hill and the reaction proceeds to fruition or its can roll back from whence it came, resulting once again in a set of unreacted chemical components.

https://adventuresinamateurwatchfettlin ... from-1969/


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Re: A brace of sports divers from 1969

Postby foghorn » December 19th 2018, 4:03pm

That had the potential be be a great article if it didn't real like a fucking text book from one of those classes that you hated to sit through.

I rate it 5 CTL's

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