This site (and e-book) has its origin in modules on energy presented by the author in postgraduate degree programmes on Sustainable Development and Spatial Planning.
Many of the students on the courses, with primary degrees in non-science areas such as law and planning, experienced some difficulty in their engagement with the concepts and units in energy.
Part of the complication arose from the use of the International System of Units or “SI” after the French title: Systéme Internationale d'Unités. (The SI has come into use in science and engineering over the past thirty to forty years; it is a development of the old metric system of units.)
In an attempt to make the subject more “palatable”, examples on a personal level were taken from food energy input, and energy output in exercise and activity and introduced in the material.
In recent years, in addition to general energy and environmental matters, it is very obvious that overeating leading to obesity with its consequent health risks, has become an important private and public health issue.
As a result, the opportunity has been taken to present the subject of energy more widely; it is approached here from a different starting point – the personal level, summarised by the title, “Managing your Body Mass”.
The author is an engineer and has worked in the energy area throughout most of his career.
He has no special expertise in nutrition or physiology – the views on these topics presented here are mainstream, well developed in the literature and promoted by public health organisations throughout the world.
The sole innovation is their presentation in SI units and in a different format, with some minor observations based on personal experience.
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