Hydrodynamics

In this interview Joseph Silk discusses topics such as: influence of Boy Scouts in childhood; family background; high school education; early interest in mathematics; coaching by high school math teacher; math at Cambridge; influence of Dennis Sciama at Cambridge and decision to go into astronomy; fellow students at Harvard; character of Harvard astronomy department in the 1960s; David Layzer's opposition to the standard big bang model; first interest in the problem of galaxy formation and the union of hydrodynamics, radiative transfer, and cosmology at Woods Hole in summer of 1967; influence of Richard Michie; thesis work on interaction of matter and radiation in galaxy formation; ignorance about the first second of the universe and the origin of the primordial fluctuations; history of the growing confidence in the meaning of the cosmic background radiation; the philosophy of simplicity in physics; the role of the cosmic background rdiation in testing theories of galaxy formation; history of the horizon problem and Silk's attitude toward that problem; change in attitude as a result of the inflationary universe model; attitude toward the inflationary universe model; reasons why the model has become so popular; first introduction to and attitude toward the flatness problem; Silk's acceptance of appropriate initial conditions as explanations of cosmological problems; attitude toward the missing mass required by inflation; reaction to de Lapparent, Geller, and Huchra's work on inhomogeneities; ignorance of nature of inhomogeneities on scales betwen 20 megaparsecs and 2000 megaparsecs; worry over large-scale velocity fields and reported anistropies in the cosmic background radiation as challenges to standard models for the origin of fluctuations; importance of reported distortions in the spectrum of the cosmic background radiation (CBR) and difficulties of explaining such distortions if true; outstanding problems in cosmology: distortions in the CBR, galaxy formation, suitable initial conditions, satisfactory theory of inflation, value of omega; importance of metaphors and good verbal descriptions in scientific communication; interplay of theory and observation in cosmology; ideal design of the universe; question of whether the universe has a point.

In this interview, Kolumban Hutter discusses topics such as: his work at ETH Zurich; his research in glaciology; graduate degrees at Cornell University in theoretical and applied mechanics; Hans Ziegler; Hans Rothlisberger; Peter Kasser; ice plates; Daniel Vischer; John Nye; John Glen; thermodynamics; Andrew Fowler; Leslie Moreland; International Glaciological Society; hydrodynamics; Richard Sebass; fluid mechanics; physical limnology; visiting professorship at University of Arizona in Tucson; Terry Hughes; ice sheets and shelves; teaching at Darmstadt University of Technology; Ernst Becker; Reinhard Calov; Mary Williams; cold-temperate transition surface (CTS); global climate models; and working at Academia Sinica, Taiwan.

A thorough, reflective survey of the life and work of this theoretical astrophysicist. Early life and education in India, 1910-1930, and experiences at Trinity College, University of Cambridge, 1930-1937, with comments on Edward A. Milne and Arthur S. Eddington; debate with the latter over collapse of white dwarf stars. Move to U.S. in 1937, with comments on the situation at Harvard and Princeton Universities since the 1930s, and especially on Henry N. Russell, John Von Neumann, and Martin Schwarzschild. Social context at University of Chicago and Yerkes Observatory since 1937, with remarks on Gerard Kuiper, Otto Struve, Bengt Strömgren, etc. Work as teacher there, and as editor of Astrophysical Journal from 1951 until it was given to the American Astronomical Society in 1971. Scientific work resulting in Introduction to the Study of Stellar Structure (1939) and publications on stochastic processes in galaxy and in general, radiative transfer, interstellar polarization, hydrodynamics and hydromagnetics (including experimental checks). Recent work on general relativity and Kerr metric; comments on cosmology. General remarks on the social structure of astronomy and its cultural role. Extended discussion of his way of functioning as a theorist. Also prominently mentioned are: Hans Albrecht Bethe, Paul Adrien Maurice Dirac, Enrico Fermi, Ralph Howard Fowler, George Gamow, Robert Hutchins, James Jeans, Alfred H. Joy, William Wilson Morgan, Harry Hemley Plaskett, Sir Chandrasekhar Vankata Raman, Ernest Rutherford, Harlow Shapley, Arnold Johannes Wilhelm Sommerfeld, Lyman Spitzer, Eugene Paul Wigner; Aberdeen Proving Ground, American Astronomical Society, Presidency College (Madras), United States Office of Naval Research, and United States Proving Ground at Aberdeen MD Ballistics Research Laboratory.

A thorough, reflective survey of the life and work of this theoretical astrophysicist. Early life and education in India, 1910-1930, and experiences at Trinity College, University of Cambridge, 1930-1937, with comments on Edward A. Milne and Arthur S. Eddington; debate with the latter over collapse of white dwarf stars. Move to U.S. in 1937, with comments on the situation at Harvard and Princeton Universities since the 1930s, and especially on Henry N. Russell, John Von Neumann, and Martin Schwarzschild. Social context at University of Chicago and Yerkes Observatory since 1937, with remarks on Gerard Kuiper, Otto Struve, Bengt Strömgren, etc. Work as teacher there, and as editor of Astrophysical Journal from 1951 until it was given to the American Astronomical Society in 1971. Scientific work resulting in Introduction to the Study of Stellar Structure (1939) and publications on stochastic processes in galaxy and in general, radiative transfer, interstellar polarization, hydrodynamics and hydromagnetics (including experimental checks). Recent work on general relativity and Kerr metric; comments on cosmology. General remarks on the social structure of astronomy and its cultural role. Extended discussion of his way of functioning as a theorist. Also prominently mentioned are: Hans Albrecht Bethe, Paul Adrien Maurice Dirac, Enrico Fermi, Ralph Howard Fowler, George Gamow, Robert Hutchins, James Jeans, Alfred H. Joy, William Wilson Morgan, Harry Hemley Plaskett, Sir Chandrasekhar Vankata Raman, Ernest Rutherford, Harlow Shapley, Arnold Johannes Wilhelm Sommerfeld, Lyman Spitzer, Eugene Paul Wigner; Aberdeen Proving Ground, American Astronomical Society, Presidency College (Madras), United States Office of Naval Research, and United States Proving Ground at Aberdeen MD Ballistics Research Laboratory.

A thorough, reflective survey of the life and work of this theoretical astrophysicist. Early life and education in India, 1910-1930, and experiences at Trinity College, University of Cambridge, 1930-1937, with comments on Edward A. Milne and Arthur S. Eddington; debate with the latter over collapse of white dwarf stars. Move to U.S. in 1937, with comments on the situation at Harvard and Princeton Universities since the 1930s, and especially on Henry N. Russell, John Von Neumann, and Martin Schwarzschild. Social context at University of Chicago and Yerkes Observatory since 1937, with remarks on Gerard Kuiper, Otto Struve, Bengt Strömgren, etc. Work as teacher there, and as editor of Astrophysical Journal from 1951 until it was given to the American Astronomical Society in 1971. Scientific work resulting in Introduction to the Study of Stellar Structure (1939) and publications on stochastic processes in galaxy and in general, radiative transfer, interstellar polarization, hydrodynamics and hydromagnetics (including experimental checks). Recent work on general relativity and Kerr metric; comments on cosmology. General remarks on the social structure of astronomy and its cultural role. Extended discussion of his way of functioning as a theorist. Also prominently mentioned are: Hans Albrecht Bethe, Paul Adrien Maurice Dirac, Enrico Fermi, Ralph Howard Fowler, George Gamow, Robert Hutchins, James Jeans, Alfred H. Joy, William Wilson Morgan, Harry Hemley Plaskett, Sir Chandrasekhar Vankata Raman, Ernest Rutherford, Harlow Shapley, Arnold Johannes Wilhelm Sommerfeld, Lyman Spitzer, Eugene Paul Wigner; Aberdeen Proving Ground, American Astronomical Society, Presidency College (Madras), United States Office of Naval Research, and United States Proving Ground at Aberdeen MD Ballistics Research Laboratory.