(Monday's recorded broadcast)
Two talks on the physics of the solid state by G. F. J. Garlick, D.SC., F.inst.P., Professor of Physics in the University of Hull.
The physical properties of many solids depend on the presence of traces of impurity and imperfections in the bulk material. From research in this field, and from the rapid expansion of solid-state physics generally, have come new devices such as the transistor and the thermo-electric refrigerator.
In his first talk Professor Garlick discusses, with simple analogies and models, the success of wave mechanics in explaining not only the electronic behaviour of semi-conductors but the existence in them of other 'particles' known as 'positive holes'.
Repeated on Saturday at 9.10 (Home)
Second talk: next Friday
Introduced by Roy Hay.
Norman Stewart, senior horticultural lecturer at the Kent Farm Institute, deals with late-keeping varieties of apples and pears.
S. A. Searle from Chichester, Sussex, describes the technique of producing late-struck chrysanthemums.
Arranged and introduced by Bill Hartley.
Aids to Night Driving: A controversial discussion.
Saving on Repairs: 1: Clive Walker offers some suggestions on how to cut down expenses
The Lawyer: Recent Case Law concerning motorists: 2
Cars of Other Lands: 3: Belgium and Holland: Joseph Lowrey, joint technical editor of The Motor, reports.
The week's motoring news and other items of topical interest.