Adventures in Order and Chaos: A Scientific Autobiography by George Contopoulos

By George Contopoulos

The box of Order and Chaos had a striking growth within the final 50 years. the most cause used to be using desktops, and the improvement of latest theoretical tools that we name now 'the idea of chaos'. the writer describes this attention-grabbing interval in a peaceful and infrequently funny autobiographical method. He relates his interactions with many of us in dynamical astronomy and he rates numerous anecdotes from those interactions. He refers additionally to his stories whilst he served in a variety of overseas positions, reminiscent of normal secretary of the IAU and chairman of the magazine Astronomy and Astrophysics. lately the idea of chaos has been prolonged to new parts, like relativity, cosmology and quantum mechanics and it keeps increasing in just about all branches of physics. The publication describes many vital rules during this box in an easy means. It refers additionally to difficulties of extra normal curiosity, like writing papers and giving lectures and the interplay of authors and referees. ultimately it supplies a few important customers for the way forward for dynamical astronomy and similar fields.

George Contopoulos, PhD U.Athens1953; Professor of Astronomy U.Thessaloniki 1957-75; U.Athens 1975-96; Emeritus 1996-; Member, Academy of Athens 1997-. traveling Professor Yale U., Harvard U., MIT, Cornell U., U.Chicago, U.Maryland, U. Florida, Florida country U., U. Milan; Res. affiliate, Yerkes Obs., Inst.Adv.Study Princeton, Inst.Space stories, Goddard Flight middle, Columbia U., ESO. writer or Editor of 15 books, and approximately 250 papers on Galactic Dynamics, Relativity and Celestial Mechanics. Positions held: Gen.Secretary of the IAU; Director normal Nat.Obs.of Greece, Pres.Hellenic Astron.Soc.; Nat.Representative of Greece in NATO, and so forth. differences: Amer. Astron.Soc. Brouwer Prize; U.Chicago, Honorary Doctor's measure; IAU, Pres. fee 33 (Galaxy); Member Academia Europaea; affiliate Royal Astron. Soc.; Chairman of the ecu magazine "Astronomy and Astrophysics"; Assoc. Editor of "Cel. Mech. Dyn. Astron."; Over 4500 citations and three hundred acknowledgements.

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As regards astronomy, one should mention the application of integrals of motion to the pulsations of variable stars (Perdang and Blacher 1982, 1984) and to the motions of galaxies in cosmology. The applications of the third integral in relativity and cosmology will be discussed in section 36. 7 The Breakdown of the Third Integral When the perturbations of an integrable system become large the third integral breaks down. That means that the orbits become chaotic and are not constrained by any integral besides the classical integrals of energy, angular momentum, etc.

The tradition of the long report, initiated by Bok, continued for many years. When I was president of the Commission, the long report was published as a book by the University of Thessaloniki. O. W. Morgan), etc. At the General Assembly there were several young Greek astronomers. During a boat trip along the river Elbe we gathered together on the deck and we 37 organized a choir (I had some assistants that were excellent singers). We sung several Greek and classical songs. While we were singing many participants came to the deck and were listening, seemingly looking at the water.

The relation of this work with quantum mechanics will be discussed in section 37. Other applications refer to nonlinear electric systems, to phenomena near the absolute zero of temperature, and to the dynamics of elementary particles. As regards astronomy, one should mention the application of integrals of motion to the pulsations of variable stars (Perdang and Blacher 1982, 1984) and to the motions of galaxies in cosmology. The applications of the third integral in relativity and cosmology will be discussed in section 36.

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