The Outline of Science, Vol 1, by J. Arthur Thomson. Part III.

In The Outline of Science, Thomson gives us a window into scientific thinking as it stood in 1922 on the big, the little, and the biological. With straightforward language intended for a general audience, this book covers astronomy from the Solar System to the Milky Way, the submicroscopic makeup of matter from protons and electrons, and the evolution of simple living beings into the varied fauna of the world today. Thomson cites many examples that would have been familiar to his readers of the day and notes where scientific understanding leaves off and conjecture begins. He clearly shows how the accumulation of observation and experiment stacked up to form the body of knowledge reported in the book.

For even the scientifically well-versed, there will be interesting nuggets, for investigation into how the world came to be as it was, was both wide and deep.

To a modern listener, what was not known may be as interesting as what was. With the 100-inch Mt. Wilson reflector the largest telescope in the world, the existence of galaxies outside the Milky Way was suspected but not confirmed. Neutrons, soon to become important in the field of nuclear energy and atomic bombs, were as yet unguessed-at, yet the prospect of liberating the immense energy of the atom was already a keen interest. Although the famous Michaelson-Morley experiment had already been seen as disproof of an all-pervading "ether" which facilitated the flow of energy across empty space, scientists still retained ether as a place-holder for properties they could measure but not explain - an approach very similar to the "dark matter" of modern cosmology.

This book has been consistently among the "Top 100 E-Books" published by Project Gutenberg.

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