Thursday, February 15, 2007

_les particules élementaires



"Griffiths's stories were introduced in 1984 to relate quantum measurements in plausible narrations. One of Griffiths's stories is based upon of a series of random measurements taken at different times. Each measurement express the fact that a certain physical quantity, possibly different from one measurement to another, is included, at a given moment, within a certain domain of values. For example, at time T1 an electrone has a certain velocity, determined by an approximation that depends on the type and mode of measurement; at T2 it is located a certain place in space; at T3, it has a certain spin value. Based upon a subset of measurements a logically consistent story can be defined, but which nonetheless cannot be said to be true; it can only be sustained without contradiction.

[In these stories] everything happens as if the world were made up of seperate objects, possessing intrinsic and stable properties. However, the number og Griffiths's conscious stories that could be rewritten based upon a series of measurements is, in general, far greater than one."

(Paraphrasing HOUELLEBECQ; MICHEL; The Elementary Particles)

No comments: