Concerning the Nature of Things

This edition has been fully restored with modern typesetting, custom cover design. Sir William Bragg's Concerning the Nature of Things turns the Royal Institution's famous Christmas Lectures into a vivid journey through modern physics, asking how invisible atoms shape the visible world. From the start, Bragg makes science feel immediate and dramatic, using experiments, models, and clear language to guide readers from ancient ideas to the newest discoveries. He contrasts Lucretius's bold atomic vision with John Dalton's breakthrough that atoms come in distinct kinds, then shows how radioactivity and X-rays gave scientists "new eyes" for probing matter. Along the way, he explores atomic size, three-dimensional structure, chemical attraction, heat, and the restless motion that keeps solids, liquids, and gases distinct. He also reveals how radium transforms itself, how particles race through matter, and how surface tension, soap films, bubbles, camphor, oil films, and wetting expose the hidden behavior of molecules. Both a celebration of scientific wonder and a lesson in how to think experimentally, the book makes the unseen architecture of matter come alive.