Sur le décret du 15 juillet 1791, relatif à l'évasion du roi : adressé à un ami de la constitution, au mois d'août 1791 ([Reprod.]) / par M. Boissy d'Anglas,...

Collection : Les archives de la Révolution française ; 6.3.183

Paris assiégé : journal, 1870-1871 / Jules Claretie

Collection : L'ancien et le nouveau ; 13

E. Huguet del Villar (1871-1951) en la ciencia española contemporánea

Emilio Huguet del Villar (1871-1951), fue un destacado científico español que realizó valiosas aportaciones en diversas áreas del saber: geografía, geobotánica y edafología. Para cada una de ellas incorporó a la realidad española las modernas tendencias de investigación, a través de una elaboración teórica muy personal, y apoyado en una rigurosa y exhaustiva labor empírica. En este sentido, su obra goza de un marcado interés en la historia reciente de la ciencia española, por ser fiel exponente del ideal europeizador propugnado por buena parte de los intelectuales españoles. Asimismo, el análisis pormenorizado de su biografía, nos va a permitir llevar a cabo una aproximación a la problemática de la colectividad de científicos españoles, a partir de este original punto de vista de investigación.

Ruokalista 1871-01-15

Helsingfors : Theodor Sederholm 1871, L. Heimbürger

'Making Science Understandable'. Divulgació científica i mediació editorial: el cas de The Wisdom of the Body de Walter B. Cannon (1871-1945)

The present paper aims at an historical reconstruction, in the framework of the publishing industry in the years between the two World Wars, of the role played by the publisher William W. Norton in the genesis, published in 1932, and new edition in 1938, of Walter B. Cannon"s book The Wisdom of the Body. With the analysis of this case study, we aimed at contributing to the current criticism of the «dominant view», which tries, in an uncritical manner, that scientific popularization follows an ineluctable, continuous and linear evolution.

Thomas-Fermi theory for atomic nuclei revisited

The recently developed semiclassical variational Wigner-Kirkwood (VWK) approach is applied to finite nuclei using external potentials and self-consistent mean fields derived from Skyrme inter-actions and from relativistic mean field theory. VWK consist s of the Thomas-Fermi part plus a pure, perturbative h 2 correction. In external potentials, VWK passes through the average of the quantal values of the accumulated level density and total en energy as a function of the Fermi energy. However, there is a problem of overbinding when the energy per particle is displayed as a function of the particle number. The situation is analyzed comparing spherical and deformed harmonic oscillator potentials. In the self-consistent case, we show for Skyrme forces that VWK binding energies are very close to those obtained from extended Thomas-Fermi functionals of h 4 order, pointing to the rapid convergence of the VWK theory. This satisfying result, however, does not cure the overbinding problem, i.e., the semiclassical energies show more binding than they should. This feature is more pronounced in the case of Skyrme forces than with the relativistic mean field approach. However, even in the latter case the shell correction energy for e.g.208 Pb turns out to be only ∼ −6 MeV what is about a factor two or three off the generally accepted value. As an adhoc remedy, increasing the kinetic energy by 2.5%, leads to shell correction energies well acceptable throughout the periodic table. The general importance of the present studies for other finite Fermi systems, self-bound or in external potentials, is pointed out.