Magnification is at the heart of microscopy—it is the process that allows us to unveil the hidden details of the natural world. Through magnification, objects too small to be seen with the naked eye become visible, providing insights into the structure and function of life at its most fundamental levels. This article explores the science behind magnification, examines the various units used to measure microscopic dimensions, and compares a range of fascinating subjects from bacteria to water bears and plant cells.