Thomas Kuhn

Optical Thomas-Reiche-Kuhn sum rules.

The Thomas-Reiche-Kuhn sum rule is a fundamental consequence of the position-momentum commutation relation for an atomic electron and it provides an important constraint on the transition matrix elements for an atom. Analogously, the commutation relations for the electromagnetic field operators in a magnetodielectric medium constrain the properties of the dispersion relations for the medium thr...

Philosophical Elements in Thomas Kuhn ’ s Historiography of Science

To begin, the so-called ‘selectivity of historical judgment’ is discussed. According to it, writing history requires a comparative criterion of historical relevance. This criterion contains philosophical elements. In Kuhn’s case, the criterion directs historical research and presentation away from Whiggish historiography by postulating a hermeneutic reading of historical sources. This postulate...

Second Thoughts on Paradigms, Thomas Kuhn 「典範論」的再思考-孔恩

Paul Hoyningen-huene Context of Discovery versus Context of Justification and Thomas Kuhn

Let me begin with a convention. I will refer to the distinction between the context of discovery and the context of justification as “the DJ distinction” (where I may note, for potentially misled younger readers, that this “DJ” has nothing to do with the music business). This paper is based on an older paper of mine (Hoyningen-Huene 1987). In the present paper, I will first recapitulate some of...

Predicting the Frequency Dispersion of Electronic Hyperpolarizabilities on the Basis of Absorption Data and Thomas-Kuhn Sum Rules

Successfully predicting the frequency dispersion of electronic hyperpolarizabilities is an unresolved challenge in materials science and electronic structure theory. We show that the generalized Thomas-Kuhn sum rules, combined with linear absorption data and measured hyperpolarizability at one or two frequencies, may be used to predict the entire frequency-dependent electronic hyperpolarizabili...