Appropriate technologies able to be easily and economically constructed from readily available materials by local craftspeople have a central role in the alleviation of poverty in the developing world. However, research and development of these technologies are generally apportioned relatively modest support by the developed world's institutions,…

As a part of the UNESCO series, The Teaching of the Basic Sciences, this document focuses on new trends in the teaching of physics at the secondary school and university levels. The first half of the book is intended to help physics teachers deal with some of the phenomena associated with the transfer, conversion and utilization of energy. Papers…