Summer W. Ultra-violet and Infra-red engineering

London: Sir Isaac Pitman & sons, LTD, 1962. — 300 p.A reader browsing through the book and opening it at certain pages might be forgiven for thinking that the proper place for these sections would be a work on chemical engineering.
Following upon this assumption, it might be just as well to elaborate on the point raised.
Chemical engineering is a self-explanatory term. In fact, twenty-five to thirty years ago, there was no faculty of chemical engineering recognized by any university and engineering items, as far as they arose in chemical practice, were dealt with according to well-established principles of mechanical engineering. Later, when the needs of the chemical industry for highly specialized aspects of mechanical engineering were realized, the first thoughts of chemical engineering took shape.
A similar situation seems to have arisen with regard to ultra-violet and infra-red engineering—or paraphotic engineering as it might be called, using a generic term. It might be considered an olTshoot of the lighting or illumination engineering aspect, but the reader of this book will soon find that, apart from the section on the shape of reflectors, similarity of subject or treatment cannot be established easily. True, paraphotic engineering deals with parts of the spectrum which are immediately adjacent to the luminous spectrum with which the lighting engineer is concerned but their interactions with matter vary so considerably from those of light, that techniques widely different from those used by the lighting engineer must be used.