What does it mean to measure something that isn't there? The Weight of Nothing is a fascinating journey through humanity's attempts to define, quantify, and understand emptiness—from ancient philosophers puzzling over the void to modern scientists calculating the density of nothing itself. Through captivating stories of discovery and invention, this book reveals how "nothing" has shaped everything: physics, art, sound, and even the way we think. Each chapter explores how we built tools to weigh the invisible, from vacuum chambers to decibel meters, turning absence into one of the most powerful ideas in science.