With this paper, our main aim is to contribute to the realisation of the chemical reactivity concept, tracing the historical evolution of the concept of chemical affinity that eventually supported the concept of chemical equilibrium. We will concentrate on searching for the theoretical grounds of three key chemical equilibrium ideas: "incomplete…

This paper examines how the revolution in human thinking, with the smaller revolution in astronomy begun by Nicolus Copernicus, has plunged science educators into the new Age of Information. Examples which illustrate this development and change in human thinking (from Copernicus' time to the present) are provided from such disciplines as…

Presents the work of Newton in thermometry and argues that it is a quite distinguished work in this area and exemplifies Newton's brilliance as an experimenter. (PR)

The evolution of ideas about the concept of chaos is surveyed. Discussed are chaos in deterministic, dynamic systems; order in dissipative systems; and thermodynamics and irreversibility. Included are logistic and bifurcation maps to illustrate points made in the discussion. (CW)