## De la causalité ŕ la finalité"I found this most unusual book to be very stimulating. It really did achieve its objective of breaking academic barriers and showing how researchers in different disciplines are grappling with the same difficulties in using different conceptual and practicalmethodologies, and in explaining their results... I found many aspects of my own thinking about fluid mechanics and the philosophy of science changing as I read the book and discussed it with colleagues and friends."--Julian C. R. Hunt, reviewing the French edition. |

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### Contents

The record of turbulent velocity in a cylindrical pipe | 7 |

An example of inverse or subcritical bifurcation | 10 |

Statistical methods averages fluctuations mean effects correlations | 12 |

Copyright | |

18 other sections not shown

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### Common terms and phrases

atmosphere atmospheric-hydrospheric system attractor average behavior bifurcation biology boundary layers calculations calculus of variations causality cause chaos chaotic classic mechanics complex composed concept constitute contingency convection Coriolis force correspond defined density describe deterministic disorder dissipation domain dynamic Earth economics effects electromagnetic equilibrium example experimental experiments Favre Fermat's principle fluctuations fluid flows fluid mechanics flux function Galilean global gradient hydrosphere initial conditions internal energy kinetic latent heat latitudes laws mass mathematical mean methods models molecular diffusion momentum motion Navier-Stokes equations nonturbulent observation oceans optimization organisms parameter particles phase-space phenomena phenomenon physical physicomathematical determinism Poincare group pressure principle produces properties quantities quantum mechanics radiation regulation Rene Thom Reynolds number scale sensible heat solar solutions spatial statistical equations statistical mechanics statistical memory structure surface teleonomy temperature theory thermal tion transformations turbulent flows variables variations velocity vertical viscosity water vapor winds zones