Robert Stirling's Models of the Air Engine - James G Rizzo Paperback
A used book in very good condition published by Camden Miniature Steam Services in 2009\nThe covers have a touch of edge wear. \nIn this book James Rizzo describes in detail the two earliest surviving hot air engines, and how to build working replicas, or reduced sized models of them. The two engines concerned are those which Robert Stirling presented to the University of Edinburgh, and slightly later, to the University of Glasgow, to demonstrate his 'Air Engine'. The exact dates these were built is not known, but were certainly before 1825. The Edinburgh model is the more original, as the Glasgow model was discovered in an old store by Prof. William Thomson, later Lord Kelvin, in 1847. He dismantled it to see how it worked, and restored it to working order, along the way establishing the Absolute Scale of Temperature, the term \u201Cenergy\u201D and invented the name of a new science - Thermodynamics. Both models are now very fragile, but James was granted;
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