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Search Results: 1 - 10 of 11682 matches for " Pierre Laszlo "
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Metaphors Chemists Live By: Theodore L. Brown's Making Truth. Metaphors in Science, (Champaign, IL, 2003) (essay book review)
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2004,
Abstract: essay book review of Metaphors Chemists Live By: Theodore L. Brown's Making Truth. Metaphors in Science, (Champaign, IL, 2003)
Handling Proliferation
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2001,
Abstract: The ethics of the chemist identify with those of the citizen, in principle. The observed perversions, such as proliferation of chemicals, stem from the values of a chemical community closed upon itself, and from the attendant identification of a mere know-how with a science. The epistemic degradation produces moral indifference.
Berson, Jerome A.: "Chemical Discovery and the Logicians' Program. A Problematic Pairing" (Weinheim 2003) (book review)
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2004,
Abstract: book review of Berson, Jerome A.: "Chemical Discovery and the Logicians' Program. A Problematic Pairing" (Weinheim 2003)
On the Self-Image of Chemists, 1950-2000
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2006,
Abstract: The field of chemistry is highly diverse. Yet, the aggregate picture of chemists, according to this study, shows them to constitute a highly homogeneous and even gregarious group, in terms of their self-image. They see themselves as creative, as benefactors of humankind, and as craftsmen upholding a tradition of intelligent hands and preserving, even in the time of Big Science, a relatively low-tech profile. The stereotypical public image as the sorcerer's apprentices who befoul the environment and who manufacture chemical weapons is way off target. Chemists find it a caricature, it only reinforces the good conscience within the chemical community. Other conservative forces are the common language of structural formulas, a widespread phobia about mathematics, and the very length of the apprenticeship to be served. Conversely, between the mid-twentieth century and the advent of the twenty-first century, chemists displayed an impressive adaptability in the face of swift changes, regarding the tools of the trade – which the NMR Revolution had contributed to upgrade –, the funding of their activity at a much higher level, the oil crises, and the Biological Turn that affected them during that period.
The Play of Boys: Oliver Sacks' "Uncle Tungsten. Memories of a Chemical Boyhood" (New York 2001) (essay book review)
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2002,
Abstract: essay book review of The Play of Boys: Oliver Sacks' "Uncle Tungsten. Memories of a Chemical Boyhood" (New York 2001)
Is There Life After Partington? (essay book review)
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2004,
Abstract: essay book review of Is There Life After Partington?
Playing with Molecular Models
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2000,
Abstract: Any serious study of the uses of molecular models in chemistry has to mention play as an essential component. A research chemist will use them not unlike a young child playing with a toy: exploring their features, trying out their resilience, probing their innards, tinkering, day-dreaming, and thus finding out new avenues of adventures of the mind and in the laboratory. Reasons for such an assimilation of a molecular model to a toy are given and assessed critically.
Chemical Analysis as Dematerialization
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 1998,
Abstract: Chemical analysis is envisaged as an exemplar of laboratory work. Matter, held at a distance within the probe of instruments, is converted there into electronic signals. Matter serves only as prime material for information production. Chemical analysis converts instrumentalized readings into informational statements. Major chemical thinkers (Auguste Laurent, Justus von Liebig, Jean-Baptiste Dumas, and others) made this conceptual revolution. In mid-nineteenth century, they built a daring theory of radicals. Since that time, molecular chemistry became a combinatorial art and science of radicals. These, groups of atoms with only at first fictional existence, are analogous to phonemes in speech production.
Foundations of Chemical Aesthetics
Pierre Laszlo
Hyle : International Journal for Philosophy of Chemistry , 2003,
Abstract: In these prolegomena to a chemical aesthetics, eleven separate theses are asserted: (1) the natural is more beautiful; (2) the artificial is more beautiful; (3) the invisible is yet more beautiful than the visible; (4) the need for visualization is unavoidable; the beauty of chemistry stems from (5) an inner logic and (6) its unpredictability; (7) any change is handsome on account of its invariant elements; (8) the beauty in any change is the fleeting instant; the beauty of chemistry is that it is (9) a science of the complex and (10) a science of the simple; (11) a new contemporary art has been born.
Entropy production in diffusion-reaction systems: The reactive random Lorentz gas
Laszlo Matyas,Pierre Gaspard
Physics , 2004, DOI: 10.1103/PhysRevE.71.036147
Abstract: We report the study of a random Lorentz gas with a reaction of isomerization $A\rightleftharpoons B$ between the two colors of moving particles elastically bouncing on hard disks. The reaction occurs when the moving particles collide on catalytic disks which constitute a fraction of all the disks. Under the dilute-gas conditions, the reaction-diffusion process is ruled by two coupled Boltzmann-Lorentz equations for the distribution functions of the colors. The macroscopic reaction-diffusion equations with cross-diffusion terms induced by the chemical reaction are derived from the kinetic equations. We use a $H$-theorem of the kinetic theory in order to derive a macroscopic entropy depending on the gradients of color densities and which has a non-negative entropy production in agreement with the second law of thermodynamics.
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