The Fourier theorem

It has been tacitly understood that Fourier's representation theorem applies only to a very restricted class of functions. On the contrary, by adopting an appropriate algebraic viewpoint, it is explained in this article how the theorem can be readily extended to include all (non-pathological) functions.     

The evolution of liquid and gas centrifuges

Although the principle of separation by centrifugation has been known for nearly a century, the technical difficulties of using it in practice are very great. Only in comparatively recent years has there been sufficient understanding of the underlying theory, and availability of suitable materials of construction, for the high-speed centrifuge to be used as a powerful aid to medical research and, very recently, as a means of separating isotopes on an industrial scale.     

The role of higher education institutions in national development

Abstract from the report of the International Conference on Education (33rd Session) of the International Bureau of Education. It deals with (i) the role of higher education institutions in national development, (ii) improving and sustaining the competence of educators and (iii) managing the system of education.