|The measure of the universe
John D North||Dover Publications, 1965||ISBN: 0486665178
When trying to push forward the boundaries of a subject of study its important to know something of its history, both to avoid pitfalls which have been made before, and to re-evaluate old ideas, to see if they might be of use. The measure of the universe by John D. North provides a useful historical resource for the subject of cosmology, in particular that of the first half of the twentieth century. The book was written over 40 years ago, but I feel that this is a plus, as it meant it was closer to the action. Today we talk of the FLRW cosmological model, and this book looks at the contributions of each of these four scientists, as well as the Einstein- de Sitter model, the ideas of Milne and the later ideas of a steady-state universe. To get the most out of the book it is important to work through the mathematics in it, but this is generally fairly straightforward.