A scheme is outlined for the treatment of light up to university scholarship standard. In this, geometrical optics has its customary prominent place. An argument is presented against its being displaced by a wave theory ...

The various grades of geometrical optics teaching at King's College, London, are briefly outlined. Experience has shown the Abb method, as developed in Drude's Optics, to be the most instructive method for both the special ...

The subject is discussed only from the industrial point of view. The first point raised is that educational authorities cannot subordinate more important interests, such as those of the chemical and electrical industries, ...

This paper, which is the written version of the 1962 Guthrie Lecture, describes the physics underlying the radio astronomical researches at Jodrell Bank. The following topics are covered: (i) the physical theory of the ...

This lecture reviews the progress made towards releasing energy from the fusion of the light nuclei. To achieve this it is necessary to create an extremely hot plasma containing the light nuclei and to hold this plasma ...

A number of theories have recently been proposed to explain 1/f noise in germanium filaments. These theories may be extended to germanium devices and suggest experiments which may be performed to give evidence of their ...

With the object of estimating dislocation densities and orientations in NaCl, a series of single crystals was prepared with up to 10% plastic deformation along the [001] axis. The 23Na nuclear magnetic resonance was examined ...

Reform in teaching will only come through pressure brought to bear by examinations. Experimental work should be devised in which the student must exercise his originality and resource in devising his apparatus and methods. ...

Cosmologies separate sharply into those which predict that a definite origin of the whole universe occurred a precise finite time ago, and those which require no such origin to have taken place. Observational methods exist ...