outdoor canopies
air the excellent canopy
we take it for granted but without it we perish and if we continue to abuse it it may kill us in the end . this fascinating text provides an understanding and appreciation of the role that air plays in our environment and its importance in relation to human life and technology . aimed at those who are scientifically curious but who have no specialist training it contains no mathematical equations and relies upon the qualitative descriptions and analogies to explain the more technical parts of the text together with simple home experiments to illustrate a range of air based phenomena . liberally illustrated with a range of line drawings and photographs it recommends further reading for those who are motivated to learn more . this book offers valuable background reading for both physics teachers and students .