THE title of this article requires a few words of explanation. In a study of the principles of air cooling, theory by itself takes us only a very little way. On the other hand, the offspring of a happy marriage of theory and practice is capable of taking us very much further than cither of his parents unaided. Theory, like a wise mother, must accept the limitations of her more practical partner, and rest content in the knowledge that he will turn to her for wise and deep counsel when in doubt.
Pye, D.R. (1933), "The Theory and Practice of Air Cooling: A Correlation of the Problem of Design with Researches on the Boundary Layer", Aircraft Engineering and Aerospace Technology, Vol. 5 No. 2, pp. 31-33. https://doi.org/10.1108/eb029652Download as .RIS
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